No Sense of Guilt — Jack Slater

An old man dies unexpectedly. His family blame his live-in carer. When DS Pete Gayle and his team begin to investigate, another, similar case quickly comes to light, involving the same carer, who has since disappeared. It looks like they may be dealing with an unexpected killer. But questions remain. Is she a killer, a thief or a victim? They need to find her before anyone else can be killed.