Castle: "I have a hard job, Castle, and having you around makes it a little more fun"

Two important things happened in this week's Castle episode: 1) Beckett got one step closer to finding her mother's murderer and 2) Beckett finally acknowledged that she enjoys having Castle shadow her. Here come a few more details about exactly what happened in the episode.

An Irish mobster is found dead and from the wounds the medical examiner realizes that the person who killed him was a highly trained contract killer. They then realize there are patterns between this murder and four others, one of which happened to be Beckett's mother. By the end of the episode, Beckett finds closure on half of the equation. She found the hitman who physically murdered her mom, but he was shot because he had taken Castle hostage and he died before he could tell Kate who hired him.

At the end of the episode, Castle goes to Kate and apologizes for ruining her chances at finding the person who was responsible for her mother's death. He even says he will stop shadowing her, but she admits she wants him to stick around.

The second half of this week's episode was heart wrenching. The usual laid-back attitude of the show stopped the moment Beckett found out she could possibly find her mother's killer. But that only made the episode more enticing. This episode proved that there is a time and place for both the funny and serious sides of this show.