Four for a Boy by Louise Collins

The compromise is working.
They’re happy…
Chad thinks.
But when Romeo reveals his fantasy to Chad, their carefully crafted life comes undone.
Romeo wants Chad to kill their next victim, but it’s a line he can’t cross, being the killer, not just enabling one.
That’s a step into the grey that he’s not prepared to take.
But what will happen if he tells Romeo no?
Will he leave?
Or worse, will he make Chad cross the line?
There’s a killer on the loose, and they’ve kidnapped number four.
It’s a race against time to solve the case and save a life, but as the pieces come together, Chad realizes he has more in common with this killer than he ever thought possible…