A child's toy is an odd catalyst for a spy's downfall, but the discarded gift has helped Liz Keen to begin dismantling Tom's elaborate scheme on The Blacklist.

Blissfully unaware that his wife has made any new discoveries in regards to his identity, Tom (Ryan Eggold) will continue to keep his cover on track while Liz (Megan Boone) looks for ways to reach the truth in "Milton Bobbit."

If only the FBI profiler had access to Tom's old wall of clues, a spot where she could potentially find answers about Tom, herself, and Red (James Spader).

"Tom's wall of clues is something that we've been playing around with a lot and its sort of teasing the audience as to why Tom was planted in Liz's life and what he knows," explained writer Amanda Kate Shuman on the latest edition of Beyond The Blacklist. "Ultimately, what your learning form the wall of clues is that there's something very important that he's figured out that he doesn't want Liz to know. Liz is so close to sort of learning what Tom knows and learning what potentially Red is trying to hide from her and she gets there a little too late."

Perhaps Tom's alleged brother, played by Peter Scanavino, will be able to drop a few clues when he comes to see Tom and Liz renew their marriage vows in "Milton Bobbit," according to TV Guide.

The Blacklist airs Mondays at 10 p.m. ET on NBC. Click the video below to see a preview for the March 31 episode, "Milton Bobbit."