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7.9

20/20•Season 45•Episode 23

Lock the Door Behind You

7.9/10 · 17 votesMay 13, 202281 min

Ranked #6 of 26 in Season 45•+0.3 vs season avg

Never-before-broadcast video gives insight into the mind of serial killer Henry Louis Wallace, who confessed to 11 murders from 1990-1994, and his only surviving victim speaks in his first interview.

Previous episodeE22 · Gone Before the Storm Next episodeE24 · Double Life, Double Murder

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 45 Episodes26

Chippendales Murder

The Principal's Wife

Do No Harm

Life Online: The Last Days of Gabby Petito

Sincerely, the Happy Face Killer

Goodnight, Mother

Escape From A House Of Horror

Nowhere To Run: The Ahmaud Arbery Story

The Deadly Take

I Now Pronounce You Dead

Fall of the House of Murdaugh

Adam…& Evil

Gone at Dawn

You've Got Jail

Home Sweet Murder

The Dropout: The Rise and Con of Elizabeth Holmes

The Cult Next Door: The Mystery and Madness of Heaven's Gate

The Devil You Know

Dead Man Talking

Hell in Heels

Words to Die By

Gone Before the Storm

E23 7.9Now viewing

Lock the Door Behind You

Double Life, Double Murder

Laura Lee Day

The Last Hunt

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Episode Summary

"Lock the Door Behind You" is episode 23 of 20/20 season 45. It scored 7.9/10 from 17 votes, ranking #6 of 26 episodes this season (season average 7.6). It aired on May 13, 2022.

Next: E24 · Double Life, Double Murder Best of Season 45