Paige Turco Paige Turco

On Wednesday's episode of The 100the Ark develops serious doubts about the survival of its Earth-bound ambassadors as more and more of them remove their transmitter cuffs.

TV's most heart-breaking deaths

Abby (Paige Turco), whose daughter Clarke (Eliza Taylor) is one of those on the ground, is desperate to figure out what's seemingly killing off the ambassadors. Thankfully, she gets some much-needed insight from an unlikely source. 

When Raven (Lindsey Morgan), a mechanical engineer, is refused visitation with her boyfriend who is in lock-up due to "quarantine," she begins spying on Abby to figure out the truth. 

Get an exclusive first look at Raven below.

The 100 airs Wednesdays at 9/8c on The CW.

(Full Disclosure: is owned by CBS, one of The CW's parent companies.)

Exclusive The 100 Sneak Peek

Lindsay Morgan guest stars