The handover / David M. Barnett.

Daisy is the night security guard at the Manchester Museum of Social History. She takes her job very seriously, protecting the museum from teenage troublemakers. Nate works the day shift, though he'd be more suited as a museum guide the way he chats with the visitors. For five minutes each day their shifts overlap at handover. He passes the torch over to Daisy - with a smile on his face, and she asks him for a full report of the day, which he gives reluctantly. It's the only interaction they have - until mysterious things begin to happen at the museum. They discover they have a lot more in common than they realised... and their investigations uncover more than just the truth.