A fiery cross outside a blazing house. A woman dead, her son burned. Prime suspect: the babysitter.

Police investigations can be heavy-handed, and it's the job of DCI Sophia Beadle and her elite team to tackle cases that require a softer approach.

A grotesque arson attack, more reminiscent of 1960s Mississippi than contemporary London, is just one of the things on their plate. 16-year-old Debbie Clarke is the least likely suspect imaginable - until they discover her father's neo-Nazi past. Along with the usual caseload of sex crimes, hate...