Sarah Stern's body has never been found, but Friday the case against the admitted accomplice in her 2016 strangulation murder is expected to conclude.

Preston Taylor, 22, testified that he helped Liam McAtansey, 21, dump Stern's body off the Route 35 bridge in Belmar. McAtansey was convicted of killing Stern, a childhood friend, and sentenced to life in prison.

Taylor is scheduled to be sentenced Friday morning after pleading guilty to six charges.

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Here's what you need to know before Friday's sentencing:

Sarah Stern went missing – and the men accused in her killing participated in the search

The Asbury Park Press revealed that Taylor and McAtasney joined in a search for Stern following her disappearance. Check out the video above for more on how police found this out.

Preston Taylor agreed to cooperate with prosecutors and testified against Liam McAtansey

Taylor admitted helping McAtasney throw Stern's body off the Belmar bridge and help to create the impression that Stern had committed suicide, all for a 30 percent cut of the robbery proceeds, or $3,000. He entered his guilty plea under an agreement that requires his cooperation in McAtasney's prosecution.

Prosecutors agreed that in exchange for Taylor's testimony, they'd recommend he be sentenced to 20 years in prison.

Liam McAtasney described the strangling in a video played at his trial

Arguably one of the most pivotal and disturbing moments during McAtasney's murder trial was when the jury was shown a video in which the convicted killer describes how her strangled Stern.

McAtasney said in the video, "it took me a half hour to kill her." Watch the full, secretly taped confession below.

Liam McAtasney was found guilty at trial and sentenced to life in prison

In February, McAtasney was found guilty of all charges against him in the murder of Sarah Stern.

Last week, Superior Court Judge Richard W. English also sentenced McAtasney to life in prison without the possibility of parole. It is a state mandate for a murder committed during the course of a robbery.