"The Calling" by Alison Bruce

An audio book.

2009 - a woman is in a bath. She's cut herself - "each droplet billowed" in the water. A man enters the house, finds her.

2011 - Margaret and Mike Whiting are short of money. Their son Steve is living at home, unemployed. Daughter Michelle is in a sexually-submissive relationship with Karl (a van driver) who prefers Kay. They're about to go on holiday. The other daughter Kay hasn't turned up to the family gathering - the 80th birthday of Margaret's mother. Margaret's 46 year-old brother Andy Burrows bottled out of the meeting. Margaret called the police about Kay's absence.

DC Goodhew, 26, has split with Clare. He asks car mechanic friend Brin if he wants to go on the holiday he's already booked. Brin's sister Shelley is a pretty flirt.

The Flying Pig, a Cambridge pub, is frequented by a lone girl, a regular for 2 years, with scars, pops in at 11.45am as usual for coffee. The girl's seen someone who looks like her, Paulette. She sees a man (Peter Walsh) still with her, going for lunch. She realises that he likes women who are like her, but not her. She cuts Kay's picture from page 1 of the newspaper. She thinks she looks like Kay.

The police get an anonymous call from a woman saying that Kay's still alive and that they should arrest Peter Walsh.

Kay, gagged, has been dumped by a flooded quarry near Ipswich. She dies.

Goodhew's colleague Kinkaid, unhappily married, is jealous of Goodhew because their boss Marks gives Goodhew slack and Goodhew somehow has his own house in Cambridge. He convinced that the criminal's within the family. Goodhew's colleague Sue Gully shyly fancies him.

On the day of her disappearance Kay was in Woodbridge and got a card for a Mother's birthday. Andy was in Woodbridge that day, and Kay had been in his car. He's arrested. He says that on the drive back she got out because she thought he was drunk.

The grandmother dies. Pete goes out with his colleague Donna. Goodhew meets on holiday then returns after a day because he thinks that the girl he's seen at The Flying Pig was the anonymous caller. She's seen him and has fantasised about him.

Another girl's body is found. Same MO.

We learn that the woman watching from the pub is Marlow. She misses Pete, and he still thinks about her. Pete dumps Juliette, the latest victim.

Goodhew lists Pete's 5 girlfriends and the victims. They're all similar. Pete's brougoes through her expeght in for questioning just before he had a date with Fiona. Marlow is pulled from the same lake as Kay's body had been in. Was she the killer? Goodhew goes through her extensive logs and realises that he kills one girlfriend when he finds a new one. Marlow promises that she can make Pete lead them to the latest victim, Lisa, who might still be alive. She ties up Julie, his current girlfriend, so that she can't be contacted. Goodhew releases Pete, who takes Marlow to where Lisa is to dump them together, but they're being tracked by police helicopter and Goodhew in a car.