After being arrested for murder, Tanya is questioned about poisoning Al, but the case against her looks weak and other inmates are soon pulled in for questioning. When the poison is traced back to the rhubarb, the Costa Cons try to get rid of incriminating evidence – but it appears to be too late. The Julies enjoy a birthday party to remember. Frances and Tanya forge an unlikely alliance when a plan to get to Tanya comes to light