Someone to Watch Over Me (Þóra Guðmundsdóttir, #5)

A young man with Down's Syndrome has been convicted of burning down his care home and killing five people, but a fellow inmate at his secure psychiatric unit has hired Thora to prove Jakob is innocent. If he didn't do it, who did? And how is the multiple murder connected to the death of Magga, killed in a hit and run on her way to babysit?