On the 100th episode of NCIS:Los Angeles, the team investigates the kidnapping of Callen's father by Vasile Comescu. Hetty tries to keep Callen off the case by sending him for an evaluation, but he realizes something is up and follows the team to the crime scene.
Callen takes the situation into his own hands when it's revealed that Comescu family is involved. Callen goes to Arkady for help and Comescu ends up following them. Callen crashes into their car and kills them. Vasile calls his cousin's phone and gets Callen instead. They agree to meet to exchange Callen's father for the dead cousin. When Callen arrives, instead of turning over the cousin the trunk he rigged exploded.
Granger and Sam show up and their car flips over. Granger is shot. They both come to Callen aid, but not before Comescu killed Callen's father. In the end, it's revealed that the man wasn't really Callen's father, but someone that knew and was saved by his father. Deeks found a film in with the pictures and Callen watches it. It shows Callen's father pushing him on the swings.
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