Ep 4. Blood Feud

The Mentalist season 5 episode 4, titled "Blood Feud," follows the CBI team as they investigate the murder of a Member of Parliament's son. Patrick Jane suspects that the victim's family might be involved in the crime, but his theory is quickly debunked by Cho after going through the CCTV footage of the crime scene. The investigation takes an unexpected turn when they discover that the victim was in a long-standing blood feud with a neighboring family.

As the team delves deeper into the case, they learn about the ongoing feud between the two families, which dates back many generations. The victim's family, who was originally from Italy, had a feud with the Irish family, which started over a territorial dispute in the early 1920s. Over time, the dispute evolved into a full-blown blood feud, with both families committing crimes and murders against each other.

As the investigation progresses, Jane discovers that the feud between the families is at the heart of the murder. He finds evidence that the victim was trying to make amends with the Irish family and had planned to meet with them on the night he was killed. This leads the team to focus their investigation on the Irish family and their known associates.

Meanwhile, Rigsby and Van Pelt deal with some relationship issues when Rigsby discovers that Van Pelt is dating another man. Rigsby tries to play it cool, but it's obvious that he's hurt by the news. Van Pelt explains that she wanted to move on because Rigsby was sending mixed signals, but at the end of the episode, Rigsby confesses his love for her.

As the CBI team gets closer to uncovering the truth behind the murder, tensions between the two families escalate, and more lives are put at risk. The episode ends with a shocking twist that leaves the audience wondering what will happen next.

Overall, "Blood Feud" is an engaging and suspenseful episode of The Mentalist. It explores the complex dynamics of long-standing family feuds and how they can lead to tragic consequences. With excellent performances from the cast and a gripping storyline, this episode is a must-watch for fans of the show.