Helen Gaskell is found by her teen-aged daughter Melanie, beaten to death and lying in a pool of blood in her garage. The previous evening, she had coached Melanie and her niece Jess in a girls cheer leading competition but lost which had put her in a foul mood. DCI Jeanine Lewis and the team begin to piece together her movements. Her husband Alan and daughter both seem to have alibis as do her sister Anita and niece Jess. When it's revealed that she was having an affair, Alan becomes an obvious suspect but when they discover her lover was having an affair with another member of the family, the list grows. Jeanine meanwhile is having trouble with her son who seems to have taken a severe dislike to one of his schoolmates.
—garykmcd