My Dad Is Ten Years Old

His name is Jimmy. They told us not to call him Dad any more. It might freak him out.
The accident changed everything. Once, my Dad was the perfect father. We were the perfect family. Now he's got the mind of a ten-year-old.
From one crazy day to the next, we lose a little more of the man we knew and loved.
And then a shocking discovery about his past makes us question everything . . .