Poor Jack had to cope with his mum every day. He didn’t understand what was happening to her or why she was so stressed. On one tragic day, she thoughtlessly changed all that for him. He would never see her again.

Help for Jack appears quickly, in the form of two lovers from the railway police: the amorous DI Crosier and the ever-willing Sergeant Claire Cardin. They can’t offer Jack a home, but their uneasy solution to Jack’s problem is short lived as further tragedies soon strike.