20/20 backdrop

20/20 S46E36 — Long Island Serial Killer

8.3

20/20•Season 46•Episode 36

Long Island Serial Killer

8.3/10 · 20 votesSep 8, 202380 min

Ranked #6 of 33 in Season 46•+0.6 vs season avg

The investigation of the Gilgo Beach murders, featuring interviews with family members of the victims and key players in the case - including Suffolk County Police Commissioner Rodney Harrison and Suffolk County Defense Attorney Ray Tierney.

Previous episodeE35 · Never Made It Home Next episodeE37 · Since You've Been Gone

Seasons29

All 1 2 8 22 25 26 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50

Season 46 Episodes33

Last Seen in Lakeland still

Last Seen in Lakeland

The Vanishing Act

The Barefoot Witness

The Darkest Night

Dial M For Missing

Red Handed

Girl Scout Murders

Divine Intervention

Tainted Love

Cold to the Touch

A Captive Student

Doctor Deceit

Chippendales Murder

I Have Been Watching...

Horror in Idaho: The Student Murders still

Horror in Idaho: The Student Murders

What The Little Girl Saw

New Year's Evil

Kill Or Be Killed?

The Kill List

House of Cards

A Model Murder

Murdaugh Family Murders

The Confession?

The Last Strike

Lauren McCluskey

Unholy Matrimony still

Unholy Matrimony

Secrets of the Lake still

Secrets of the Lake

Dying to Meet You still

Dying to Meet You

Where Monsters Hide still

Where Monsters Hide

Never Made It Home still

Never Made It Home

Long Island Serial Killer still

E36 8.3Now viewing

Long Island Serial Killer

Since You've Been Gone still

Since You've Been Gone

Taken In The Night still

Taken In The Night

Discussion

0 comments

Join the conversation

Share your take and reply to other fans.

No comments yet

Be the first to share your thoughts on this episode.

Episode Summary

"Long Island Serial Killer" is episode 36 of 20/20 season 46. It scored 8.3/10 from 20 votes, ranking #6 of 33 episodes this season (season average 7.7). It aired on September 8, 2023.

Next: E37 · Since You've Been Gone Best of Season 46