Off Herring Cove Road: The Problem Being Blue — Michael Kroft

Book 3 of 4 of the Herring Cove Road series 
With Blue's father in prison for selling marijuana and his mother estranged for over the last seven years, Blue is doing well, all considering. As the second addition to the not-so-nuclear Dixon family of Lisa, her ten-year-old son, Dwight, and the retired, Jewish introvert, Av, Blue finds himself living in a much better area of Halifax, Nova Scotia, going to a much better school and for the first time, actually applying himself academically as he struggles to fit in. 

All that's soon threatened when Blue's estranged mother returns to take him away, and around the same time, he's harassed and threatened by his father's affiliation with the very dangerous, local biker gang to whom his father owes money. 

Blue, his surrogate family, and Dwight's recent overachieving classmate/friend, Lyon, are forced to deal with the quickly escalating problems that threaten both the family unit and its members.