Blood Will Out is another book in the Elversford series of police procedurals by Linda Gruchy. This time it is centred around Suzy Rolfe, a member of the Sexual Offences Investigation Team based in Galchester, rather than DI Hedley (although he does poke his nose in)
The premise of this story is drug rape. Most of the main characters are female which made it an interesting dynamic amongst them. It was very much a whodunnit with different story strands teasing each other until it came together.
I think this was a better story than Death in Spigg's Wood, although there were similarities in that it takes the case all the way.