The Murder Man by Tony Parsons

After a transfer from the anti-terrorism unit to homicide, DC Max Wolfe is immediately involved in the investigation into the grisly murder of investment banker Hugo Buck. When a homeless man is killed soon after in the same way, it seems there's a serial killer on the loose who specifically targeted both men.  What is the connection between the victims and will there be more deaths before Max and his colleague, DCI Mallory discover the identity of the killer? In this first book in the Max Wolfe series, author Parsons creates an interesting main character who struggles to raise his five-year-old daughter, Scout, on his own, while mourning the loss of his wife. He is also able to craft a puzzle that keeps you guessing until the end. A good read-alike for those who enjoy the Mark Tartaglia series by Elena Forbes.