No place of safety

Fifteen-year-old Katy Bourne and sixteen-year-old Alan Coughian are missing. Though they are students at the same school, they hardly know each other, so it's strange that they should disappear together.
There's not much the police can do about runaway teenagers, but Detective Constable Charlie Peace goes through the motions. He interviews the families, he visits the school. Alan had friends and had aspired to a good education. Katy had nothing, least of all self-esteem.
The two teens could be anywhere, even living dangerously on the streets of Leeds, so it's with relief that Charlie discovers them in a hostel for homeless young people. But are they safe? And who is Ben Marchant, the man who runs the shelter?
Whoever he is, he seems to be doing well. Young people beg or work as street musicians during the day, then eat and sleep at the hostel at night. They can remain there two weeks and then must leave for two weeks before beginning the cycle again. Only Katy and Alan stay longer. Only they have a special, mysterious understanding with Ben.
But all is not well at the shelter. One person may even hate enough to murder. One person's hate may destroy this place that some regard as a haven of peace and safety and others fear as something more complex and diabolical.