Robin, Vol. 2 #176 (2008)

Batman R.I.P. - Gathered Pieces
Robin's search for Batman continues throughout the Gotham night. Aided by Spoiler, he searches the city for clues as to Batman's fate. The black casebooks he's read may indicate that Bruce has experienced bouts of madness before, and may be doing so now. But someone unexpected has taken measures to hinder Tim's investigation.
Release Date: 2008