An Innocent Man

"An Innocent Man" (formerly titled "Salvage" ) is the fourth episode of season 1. It will air on October 31, 2012.

Synopsis
ARROW RECRUITS LAUREL TO HELP WITH A CASE — Oliver (Stephen Amell) still hasn’t figured out how to get back in Laurel’s (Katie Cassidy) good graces, but a late night bonding session with Thea (Willa Holland) gives him the inspiration he needs. Looking into a suspicious murder case, Oliver realizes an innocent man, Peter Declan (guest star Lane Edwards), was framed by one of the targets on his list. As Arrow, he asks Laurel to help prove Declan’s innocence. Meanwhile, Walter (guest star Colin Salmon) asks one of his employees, Felicity Smoak (guest star Emily Rickards), to look into a $2.6 million withdrawal that Moira (Susanna Thompson) made without his knowledge.

Production
Preparation went from July 31 to August 9. Shooting lasted from August 10 to 21.