There is a near crash on the road which involves a woman called Dolly and her daughter Alison and a rich aristocratic heir and his girlfriend. Ellis and Ormerod are called out to attend the scene of the accident. The car with Dolly and Alison in it ends up crashing into the lake to avoid the other car. With the car sinking Jack attempts to get them out. The other couple are taken to the hospital to be checked out where a water tank comes crashing through the ceiling and traps Tom the male driver. Suffering with a a ruptured spleen, Ormerod and Rose manage to free him and get him to theatre for surgery. (thetvdb.com)