The Reckoning by Jane Casey

DC Maeve Kerrigan isn't thrilled with the addition to the team, DI Josh Derwent. She finds him aggressive and hard to read. Soon, however, they're working together on the murders of three convicted pedophiles. When Maeve rescues a fourth victim, the investigation leads them to a suspect that the police know very well and a missing teenager, taking the case in a completely different direction. In The Reckoning, Maeve works hard to prove that she's just as capable as the men on her team and in the end her gender is her biggest asset. This second book in the Maeve Kerrigan series is similar to the mysteries of Barry Maitland and Elena Forbes.