Ep 15. Smells Like Teen Spirit

Castle season 6 episode 15, "Smells Like Teen Spirit," features Castle and Beckett investigating the murder of a high school student in a case that has ties to Castle's own past. The victim, Allyson, was a member of a group of students who recorded a music video that went viral. The investigation reveals that there was tension within the group, and that several of the students had motives for murder.

As Castle and Beckett delve deeper into the case, they discover that the victim was being blackmailed and that her secrets could have played a role in her death. They also uncover a connection between Allyson's death and Castle's high school days, specifically his involvement in a similar music video when he was in high school.

The episode is filled with throwbacks to Castle's past, as well as nostalgia for the 90s era in which Castle and Beckett were teenagers. The music from the video, which is played throughout the episode, adds to the retro feel of the episode.

Meanwhile, Castle's daughter, Alexis, is having trouble choosing a college, and Castle and Beckett try to help her make the decision. The sub-plot showcases the familial bonds between Castle and Alexis, and the struggles that parents and children face when it comes to big life decisions.

Throughout the episode, Castle and Beckett work through their own issues and insecurities. Castle struggles with his own teenage past and the possibility that it may have contributed to Allyson's death. Beckett, meanwhile, grapples with feelings of insecurity about her own teenage years in comparison to Castle's glamorous experience.

As always, the episode is filled with humor, suspense, and a touch of romance between Castle and Beckett. The resolution to the case is satisfying, with plenty of twists and turns along the way. The episode serves as a reminder of the show's ability to balance a murder investigation with character development and emotional depth.

Overall, Castle season 6 episode 15, "Smells Like Teen Spirit," is a strong addition to the series. It highlights the show's strengths, including its well-loved characters, witty writing, and engaging murder investigations.