Ep 21. Den of Thieves

In Castle season 2 episode 21, entitled "Den of Thieves," the team shifts their focus to a bank robbery when they realize that the robbers were targeting a safe deposit box belonging to a notorious mobster. However, things take a complicated turn when one of the robbers is found dead, leading the team to believe that there is more to the heist than meets the eye.

Detective Beckett and Castle work to solve the case, which leads them to a den of thieves who may have been behind both the robbery and the killing. As they dig deeper, they discover that the mobster's safe deposit box holds evidence that could be a crucial piece in the puzzle they are trying to solve.

The episode features plenty of twists and turns and keeps the audience engaged throughout. From the bank employees with their own secrets to the robbers with complex motives, there is no shortage of suspects or potential culprits to keep the detectives on their toes.

Meanwhile, Castle continues to struggle with his feelings for Beckett, who is preoccupied with the case at hand. As they work the case together, their banter and chemistry continue to build, leaving viewers wondering whether or not they will ever confess their feelings.

Overall, "Den of Thieves" is a thrilling episode that will keep you on the edge of your seat until the very end. With plenty of suspense, action, and a touch of romance, it is a must-watch for fans of the series.