Margaret persuades Crabbe to join her for a day the races, courtesy of her new client -- Bishop’s Cider Mill. Unfortunately, their day off turns into a murder investigation when the body of a stable hand is discovered. Was he the victim of a dangerous love triangle, or was something more sinister going on at Larkhill stables? Meanwhile, Gary’s strawberry ice cream has an unexpected effect.

Frustrated that he has to release his prime suspect, Crabbe examines a new angle -- horse doping. A string of suspicious racing accidents at Larkhill has attracted the attention of a Jockey Club investigator -- maybe someone is going to great lengths cover something up? Crabbe better figure it out soon, before Margaret gets caught in the crossfire.

Crabbe is upset to hear that Li Chen, owner of the local Chinese restaurant, has been recently attacked. His daughter is worried that the attacks are racially motivated, but Li is reluctant to report them to the police. Can Crabbe get to the root of the problem and bring victory to Pie in the Sky at the Great British Grub Competition?

Fisher calls on Crabbe to butter up a prickly witness ensconced in a safe house, and DCI Harding is annoyed he didn’t get the job. Can Crabbe cook his way into the witness’s good graces and convince her to testify against her gangster husband? Meanwhile, the overlooked Harding makes trouble for Crabbe and Henderson.

After Fisher awards the police canteen franchise to a monstrous conglomerate, Crabbe must investigate who sabotaged the celebration lunch. The list of suspects includes local baker Flora McKee and the former canteen manager, Tom Selly, but Crabbe isn’t convinced of their motives. Luckily, he has Margaret to inspire him to look elsewhere.

Armed robbers raid Pie in the Sky while Crabbe is busy with the police, and DS Stringer is too hung up on Gary’s criminal record to investigate thoroughly. Disgusted -- and worried about his empty restaurant -- Crabbe takes it upon himself to crack the case. Will he be able to uncover the true culprit, or will Pie in the Sky remain empty for good?