Child Not Found — Ray Daniel

For Aloysius Tucker, taking his nine-year-old cousin Maria sledding is all about frozen toes and hot coffee in the warming house. It shouldn't involve chasing after Maria as she's led into a long black car by a stranger in a Bruins jacket. But by the end of the crisp December morning Maria is gone, her mother is dead, and her father―mafia don Sal―has been arrested for murder. 

Sensing blood in the water, would-be successors to Sal's criminal empire square off, agreeing on nothing but the idea that Sal's blood relative, Tucker, needs to be eliminated. Searching for Maria through sub-zero days and nights, Tucker persists even as his relentless efforts draw him into a deadly crossfire between every power-hungry crook in Boston.