New Tricks: Season 4, Episode 3

4 - 3: Ducking and Driving

When an armoured security van is found at the bottom of a lake, a link is made to Michael Dudley who disappeared 17 years ago, as the drama about a team of unconventional detectives continues. Michael's disappearance coincided with the murder of Marie Sinclair. With the discovery of the van revealing that it was ransacked whilst underwater, and with Marie's murder remaining unsolved, the team decides to reopen the case. The chief suspect at the time, Marie's husband and owner of the security firm, Andrew Sinclair, continues to insist he is entirely innocent, but his story doesn't quite add up. A visit to the new owner of the security firm, Steve Palmer, doesn't provide Gerry Standing with records he was hoping to find, but it does result in Palmer making the cash-starved Standing an offer he can't refuse. Brian Lane looks into the dive clubs that would have had access to the lake over the years, which leads him to diving instructors Martin Viner and Trisha, but that appears to be another dead end. Frustrated by the pace of the investigation, Pullman decides to make the dive herself to take a closer look at the van. It's a risky strategy, but it pays off when she finds the murder weapon on the van and the team is able to trace it back to Sinclair. But just when they finally believe they are getting closer to solving the case, a key witness is murdered.