MUSKEGON, MI -- A procession of young women told a jury on Wednesday that drugs had been slipped in their drinks before they were raped by the co-defendant of a man already convicted of raping two of them.

Larry Stiff, 32, is accused of first-degree criminal sexual conduct in the alleged drugging and rapes of two of the victims who testified in Muskegon County Circuit Court Aug. 30. Another man, Joshua Humphrey, 35, has already been convicted of the two rapes and is serving 28 to 51 years in prison.

Both women said Humphrey brought them shots at a bar, and within minutes began to feel dizzy, foggy and nauseous and began blacking out. They said they remember only seconds-long snippets of the night: being driven with Humphrey and Stiff to a home, walking into a "gross" basement, coming to while someone was sexually penetrating them, knowing the other woman was lying beside her, and not being able to move or cry out.

Though Stiff is being tried for two rapes, two other women testified they too had been drugged and raped, and another said she was drugged but her friends prevented Humphrey and Stiff from carrying her off.

The prosecutor's office has said more than two dozen women came forward to accuse Humphrey and Stiff of drug-assisted rapes.

Muskegon County Senior Assistant Prosecutor Brandon Davis said in his opening statement Stiff and Humphrey operated a three-year "scheme," from 2013 to 2016, to lure women through Internet social media and dating sites to bars. There, Humphrey would slip date rape drugs into their drinks and the men would transport them to a home where they would rape the women.

Though neither Humphrey nor Stiff were charged with any larcenies, Davis suggested that the men also stole phones, money and clothing from the women.

Defense Attorney Frederick Johnson did not dispute that the women had been drugged and raped. He said Humphrey was the "sexual predator and sociopathic monster" who drugged and raped the women. Stiff was "oblivious" to the fact the women were drugged and joined "the party not knowing what's going on," Johnson said.

"These women were talking to him. They were giving him permission," Johnson said. "The women don't remember any of that."

To convict Stiff of first-degree CSC, he had to have known the women were incapacitated and unable to give consent, Johnson said.

He also needed only to be assisting Humphrey commit the rapes, Davis said.

A forensic scientist testified DNA testing indicated "strong support" that both Humphrey's and Stiff's semen was recovered from one of the victims. That victim's urine sample also contained two drugs: amitriptyline, an antidepressant, and gabapentin, an anti-convulsant drug used to stop muscles from contracting and has side effects of dizziness and sleepiness, another scientist testified.

That victim, who will be referred to here as woman 1, said she met Humphrey on the dating site www.meetme.com and agreed to have dinner with him on Oct. 30, 2013. Instead, he suggested they go to a bar, the former Cancun Connection that was on Hall Road. There she struck up a conversation with a woman she didn't know, referred to here as woman 2, and also met Stiff.

Humphrey bought the women shots and about 20 minutes after drinking hers, woman 1 said she started to feel dizzy and nauseous and began losing consciousness. She said she remembered snippets of the evening, including going to a "gross" basement of a home, sitting on a couch next to woman 2 and then realizing she was on a bare mattress on the floor.

She said she believed she was at at home where Stiff was staying because she was told to be quiet because his aunt was sleeping upstairs.

Woman 1 described waking up briefly and not being able to see but realizing someone was penetrating her sexually. Woman 1 said she also realized at one point that woman 2 was naked and next to her on the mattress.

Woman 2 gave a similar account of snippets of memory from the evening: of going to a basement, sitting next to woman 1 on the couch, then lying next to her on the mattress and coming to periodically including at one point when someone was sexually penetrating her.

"I remember being on the bed but I couldn't move.," she said. "I attempted to move my body and I just could not move my body. I was trying to get up."

The following morning, the women realized their cell phones were missing and still were in a groggy state. Both women said they felt pain from vaginal and anal penetration.

After asking two gas station clerks for directions and still feeling groggy, woman 1 made her way to her mother in the Grand Rapids area, she testified.

"Her arms never felt so safe," woman 1 said through tears.

Woman 1 ended up calling police and undergoing a rape examination.

Woman 2 said she didn't call police because "I just wanted to keep it to myself."

"I felt embarrassed that I had put myself into a situation when I was just trying to make new friends and I let my guard down," she said softly. "I ended up having to pay a price for it. I was just trying to make new friends."

Woman 2, who is visibly pregnant, began to weep when she said "I'm just trying to keep it together because I have a baby... I'm trying to be strong."

It is the alleged rapes of woman 1 and woman 2 for which Stiff is being tried.

Several other women testified about their encounters with Stiff and Humphrey:

Woman 3 said she had dated Humphrey in 2012, and reconnected with him in December 2013. She agreed to meet Humphrey at the former Club Envy in downtown Muskegon where she met Stiff. She was underage and didn't drink, she said. The three of them left and went to the house where she was told Larry lived. They went into the basement and Humphrey gave her a drink, woman 3 testified. She said she drank "at most" half of the drink before she felt like she was "going into sedation." Woman 3 said she couldn't feel her arms or legs, nor could she speak, and then blacked out. She tearfully described waking up and not being able to see but knowing her pants were around her ankles and someone was behind her sexually penetrating her. When she woke up, she was at Humphrey's house, wearing only a bra and her underwear that was inside out and had blood on her thighs. There was $100 missing from her purse, she said. Humphrey took her to Club Envy to get her car, though she said she didn't remember much of the car ride.

Woman 4, said she was 23 when she met Humphrey on the Tinder dating site and agreed to have drinks with him at Bar 46 on Apple Avenue in July 2014. They didn't stay long and went to Mike's Inn in downtown Muskegon where she met Stiff, she testified. She went to the bathroom and when she returned, Humphrey had bought her a shot which she drank, she testified. Within a few minutes she felt "really nauseous" and got up to use the bathroom but could barely walk. She said she didn't remember leaving the bar, but briefly regained consciousness while riding in Humphrey's car with Stiff and was helped into a basement of a home she described as "very dirty." She then came to lying naked in a bathroom, she said. She blacked out again and woke to Humphrey raping her and began yelling but was told to be quiet or she'd wake someone up, she said. She passed out again and woke up the next morning in a camper next to the home wearing someone else's clothes and feeling sick, she said. "I could tell my genital area hurt," she said. "I could tell overall my body didn't feel right."

Woman 5, who said she met Humphrey after he began messaging her on Facebook in the summer of 2014 and on a previous night had gone to a couple bars in Muskegon with him and her friends. She invited him out again to meet her and her friends at 22 Below, a bar in Grand Haven, and Humphrey brought Stiff along. She said had had only a couple sips of a drink when a friend bought her a shot and Humphrey asked to smell it, holding the glass with his pinkie in an awkward position. Within five minutes of drinking the shot, woman 5 said she felt like "I was going under sedation" similar to surgical anesthesia. She said she told a friend to help her leave because she had been "drugged" and knew she was about to pass out. Her head hit the table, a waitress told her friends woman 5 had to leave, and her friends dragged her a couple of blocks to one of their homes, woman 5 testified. She passed out on a couch and her friends went back to the bar, she said. When one of the friends came back to the house with Stiff and Humphrey, Humphrey tried to get her to leave, saying she wasn't safe there. Woman 5 said she tried to speak but felt paralyzed and that if it wasn't for a man staying at the house yelling at Humphrey and Stiff to get out, she was convinced "they would have physically taken me." A friend of woman 5 testified that woman 5 was "mumbling" and incoherent. "She couldn't talk, couldn't make any sense," the friend said.

The trial in Muskegon Circuit Judge Timothy Hicks' courtroom is expected to last several more day. Davis indicated he would call several other women as witnesses, including: one who was drugged and raped; one who was drugged and taken to her home and whose roommates returned and allegedly saw Stiff stealing items; and one who was drugged, called for help and was able to escape without being assaulted.

Humphrey's mother, Lynette Humphrey, was convicted of trying to intimidate woman 1 out of testifying against Humphrey. Lynette Humphrey pleaded guilty to leaving a voice mail message for her son's victim threatening to "beat her up." She was sentenced to 60 days in jail, but when she reported to serve, was attempting to smuggle in oxycodone pills hidden in a body cavity. She pleaded guilty to that as well.

Stiff also is charged with third degree criminal sexual conduct for an incident that occurred in 2016.