Blacklist Red (James Spader, left) will try to connect with Zoe (Scottie Thompson, right) in episode 7 of "The Blacklist" Season 2. Photo: NBC

Episode 6 of “The Blacklist” was a big one. In addition to dealing with a shocking case of human poachers that almost got Ressler (Diego Kalttenhoff) killed, Liz (Megan Boone) also revealed that the secret she was hiding from Red (James Spader) was none other than her husband -- and double agent -- Tom (Ryan Eggold). Now the synopsis for the episode 7, “The Scimitar,” reveals what Liz is doing keeping Tom as her prisoner.

However, first there has to be a case and episode 7 looks like an exciting one. According to the synopsis, Red and Liz will be chasing down a hit man who targets an important American scientist in the wake of an Iranian nuclear scientist's assassination.

Fans, though, will be more concerned with the reveal that Liz is keeping Tom prisoner. Assumed dead after being shot in the Season 1 finale, it seems the reason his body went missing is because Liz took it. Now she is keeping him chained in a secret room and the synopsis reveals that the reason is that she is trying to get information on Berlin. However, the promo reveals that Tom may not be any use to her anymore and she might even be considering finally finishing him off for good. Plus, Red seems dangerously close to figuring out what Liz is hiding.

Watch the promo for episode 7,”The Scimitar,” below:

Finally, Red will still be exploring his own secret in episode 7 – Zoe D’Antonio (Scottie Thompson). Pretending to be man named Kenneth, Red spent episode 6 trying to get close to the mystery girl and their relationship will develop more in the new episode.

Will fans find out Zoe’s importance to Red? Plus, how long until Red discovers Liz’s secret? Fans will have to tune in next week to find out. “The Blacklist” airs Mondays at 10 p.m. EDT on NBC.

Do you think Red will discover Liz’s secret? Tweet your thoughts to @Ja9GarofaloTV