Killjoy is the fourth mystery novel in the Inspector Ramsay series by Ann Cleeves, author of the Shetland and Vera Stanhope crime series.

The youth theatre cast are in their places but Gus Lynch's female lead is missing, that is, until she's found in the boot of his car . . .

Detective Inspector Stephen Ramsay and Sergeant Gordon Hunter are assigned to head the murder enquiry, meanwhile violence is escalating on the Starling Farm Estate as police battle to contain the latest outbreak of joyriding. Is the death of Gabriella connected to the events at Starling Farm?

When another death occurs, investigations suggest a possible link, and Ramsay realizes what could have provoked someone to kill . . . and kill again.