Back to the Future # 21 (IDW Comics 2016)
"Hard Time" continues.
The secret life of Jailbird Joey Baines starts to unravel as Marty uncovers a family mystery that goes deeper than he ever imagined but what role did Doc Brown play in the crime that sent Joey to prison?
Back to the Future # 21 is written by Bob Gale and John Barber with art and a cover drawn by Marcelo Ferreira.
Back to the Future # 21 is a 32 page comic book drawn in full color and rated T.