Memory Man by David Baldacci, 405 pages

This is the first book in the Amos Decker series by David Baldacci.  Amos Decker's life was irrevocably changed 22 years ago when he sustained a brain injury due to a hit during his one and only play and game as a professional football player.  That injury caused Amos to have a near perfect memory.

His life was changed again 16 months ago.  He returned home from his job as a police detective to discover his wife, daughter and brother-in-law murdered.  He left his job, lost his house and became homeless.  He is now a private investigator on the wrong side of town.

A man suddenly confesses to the murder of Amos' family and then a horrific mass killing happens at the local high school.

Baldacci has several series going but I hope he gets back to this one soon.  I am eagerly awaiting book #2.