From Ted Bundy to the Hollywood Ripper, Oxygen's "deadliest event" in true crime history will cover some of the most notorious serial killers.

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From April 9 to 20, Oxygen is airing its “deadliest event” in true crime history — a 24/7 marathon event focused on serial killers.

“12 Dark Days of Serial Killers” will cover some of the most notorious murder cases, including Ed Kemper and Ted Bundy, and give viewers a first look at all-new episodes and specials.

In the two-hour documentary special “Catching a Serial Killer: Sam Little,” Oxygen explores how America's most prolific serial killer went virtually undetected as he murdered more than 90 women across 17 different states on a killing spree lasting almost 40 years.

“Snapped: Notorious Hollywood Ripper,” a 90-minute special, deep dives into the crimes of Michael Garguilo, who was convicted of killing two women and attempting to kill another in Los Angeles.

The true crime event also features the season two premiere of “Mark of a Killer” and the season finale of “The DNA of Murder with Paul Holes.”

Can’t wait to watch, but unsure how to stream the event? Check out the options below.

Download the Oxygen App

Episodes and specials from “12 Dark Days of Serial Killers” can be viewed on the Oxygen app, which is available on iOS and Android. To sign in, you just have to enter your cable, digital or satellite TV subscription information.

Even if you don't have a subscription, the app offers three free credits so you can watch without signing in.

New episodes are available on the app the day after they air.

Watch Episodes Live

If you’re unsure which channel Oxygen is on, just use our Channel Finder.

Want to watch the event live, but don't have a cable subscription? Oxygen series are available to stream on services like Sling TV, Hulu Live TV, YouTube TV and more.

All you need is an internet connection and subscription to one of the above.

Stream Episodes On Your TV

It's just as easy to watch episodes on your TV as it is on your device.

Oxygen shows are available on AppleTV, Amazon Fire TV and Roku, and you can also stream episodes through Chromecast.

Need to purchase individual episodes? They're available on iTunes, Amazon, Vudu and Google Play.

Watch on Oxygen.com

You can also stream episodes and specials on Oxygen.com.

Just click on whichever episode you want to watch and enter your TV subscription info.

Tune in starting April 9 on Oxygen for “12 Darks Days Of Serial Killers” and check out highlights from the schedule below.

“Mark of a Killer” Season Two and “Green River Killer” Special Premieres Thursday, April 9 at 9/8c and 10/9c

“Snapped: Notorious Aileen Wuornos” Airs Friday, April 10 at 9/8c

“The DNA of Murder with Paul Holes” Season One Finale Airs Saturday, April 11 at 7/6c

“Catching a Serial Killer: Sam Little” Premieres Sunday, April 12 at 7/6c

“Dahmer on Dahmer: A Serial Killer Speaks” Airs Monday, April 13 at 7/6c

“Snapped: Notorious Ted Bundy” and “Ted Bundy: In Defense Of” Airs Tuesday, April 14 at 7/6c and 9/8c

“Snapped: Notorious Charles Cullen” and “Snapped: Notorious Kristen Gilbert” Airs Wednesday, April 15 at 10/9c and 11/10c

“Kemper on Kemper: Inside The Mind of a Serial Killer” Airs Thursday, April 16 at 10/9c

“Snapped: Notorious Hollywood Ripper” Premieres Sunday, April 19 at 7/6c