What would you sacrifice to save the life of a child?

When a three-year-old girl goes missing in the sprawling Birkenhead Park, Blake has a puzzle on his hands. The child seemed to vanish into thin air and nobody saw anything, not even her nanny. A known paedophile is spotted in the area and the clock begins ticking as Blake tries to find the lost girl. The team uncover secret after secret as they investigate but Blake has got problems closer to home as his girlfriend’s past comes back to haunt her in a brutal and devastating way. When a key witness dies, Blake realises that a killer is on the loose. Can he find the child before another innocent life is taken?