Ep 15. Today I Do

In Criminal Minds season 6 episode 15, entitled "Today I Do," the BAU team is called to investigate a series of murders that all seem to be connected to weddings. As the episode opens, the team is gathered around a table, discussing the case and trying to come up with a profile of the unsub - short for "unknown subject," the term the FBI uses for a criminal they're trying to track down.

The first murder they investigate is that of a bride who was found strangled in her hotel room on the morning of her wedding. The team quickly realizes that this is not an isolated incident - there have been similar murders in other cities, all targeting brides on their wedding day. The unsub seems to be a "runaway groom" who is angry about the institution of marriage and taking out his frustration on these women.

As they investigate further, the team discovers that the unsub has been reaching out to some of his ex-girlfriends, including one who was recently engaged. They realize that she is his next target and rush to her wedding, but are too late - the unsub has already struck. The team finds her body hidden in a closet, dressed in her wedding gown.

Meanwhile, Agent Prentiss is dealing with her own personal issues. She is visited by an old friend, Colleen, who is going through a messy divorce. Colleen confides in Prentiss that she believes her ex-husband is spying on her and asks for her help. Prentiss agrees, but the situation quickly spirals out of control. Colleen's ex-husband shows up at the wedding that the team is monitoring, and Prentiss is forced to intervene.

In the end, the team is able to track down the runaway groom and stop him before he can kill again. They discover that he was abandoned at the altar by his own fiancée, which triggered his rage against the institution of marriage. The episode ends with Prentiss talking to Colleen, trying to help her deal with the aftermath of her encounter with her ex-husband.

Overall, "Today I Do" is a tense and suspenseful episode that explores the dark side of love and relationships. The interweaving of the personal storyline involving Prentiss and Colleen adds a layer of emotional complexity to the episode, making it a standout in the series.