“The Blacklist” Season 4, episode 12 will see Red (James Spader) and Tom (Ryan Eggold) teaming up to find a mole in the former’s operation.

In “The Blacklist” Season 4, episode 11, Liz Keen (Megan Boone) took on the persona of Liz Crawford while infiltrating the Harem, an organization that steals from other thieves. She also confessed to Red that she knows he killed Mr. Kaplan (Susan Blommaert) and accused him of using the FBI to get the Witness Protection list because he wanted to get rid of one of the people on it. However, Red explained that the reason he wanted the list was because he needed to protect the identity of a Wisconsin housewife who chose to testify in a case years ago. This woman was Mr. Kaplan’s sister.

In the upcoming episode, Liz’s husband Tom will be the one to take on an undercover mission this time. According to the synopsis released by NBC, Red will seek Tom’s help in an issue involving his criminal organization. An interesting Blacklister will also be introduced in “The Blacklist” Season 4, episode 12, titled “Natalie Luca.”

“The Task Force chases an elusive assassin who kills by imparting a fatal disease on her victims. Meanwhile, Red (James Spader) enlists Tom (Ryan Eggold) for an undercover operation inside his criminal organization,” read the synopsis for the episode, via CarterMatt.

In the promo released for “The Blacklist” Season 4, episode 12, it looks like a mole has infiltrated Red’s operation, and the latter wants to find out who it is and flush them out immediately. In the short clip, he makes a surprise visit to Tom and Liz’s home. When Tom tells him Liz isn’t home, Red says he’s not there to see the former’s wife. It looks like recruiting Tom for the operation will be a big part of “Natalie Luca.”

NBC also released teaser photos for the upcoming episode, which showed Tom spending some quality time with his wife and their daughter, Agnes, prior to his new mission. In one snap, Liz and Tom play peek-a-boo with their baby, who is seated in her high chair, as they all gather around their dining table for breakfast. Check out the teaser photos for “The Blacklist” Season 4, episode 12 below:

the blacklist season 4 ep 12 1 Agnes sits in her high chair as her dad Tom (Ryan Eggold) watches after her in “The Blacklist” Season 4, episode 12. Photo: NBC

the blacklist season 4 ep 12 2 Liz Keen (Megan Boone) smiles fondly at her family in “The Blacklist” Season 4, episode 12. Photo: NBC

the blacklist season 4 ep 12 3 Liz (Megan Boone) and Tom (Ryan Eggold) play peek-a-boo with baby Agnes in “The Blacklist” Season 4, episode 12. Photo: NBC

“The Blacklist” Season 4, episode 12 will air on Thursday, Feb. 2 at 10 p.m. EST on NBC.