Bones Season Finale “The Secret in the Siege” Images

Christopher Pelant (guest star Andrew Leeds) is back to toy with the Jeffersonian team in their newest investigation in Bones’ season finale “The Secret in the Siege.”

The episode will see the team investigating the murders of several FBI agents with whom Booth was close

However, as the investigation unfolds, Sweets (John Francis Daley) realizes that the evidence seems all too familiar to him, and Brennan (Emily Deschanel) starts evaluating her relationship with Booth as signs begin to point to him as a potential target of Pelant’s.

Check out these first look images from the finale episode below.

“The Secret in the Siege” airs Monday April 29 (8:00-9:00 PM ET/PT) on FOX.