The frequency with which the Joker appeared in stories from the late 1940s makes one wonder if prison breakouts were a daily occurrence at this time. He is back, and on the cover of Detective 128 (Oct. 47)
Art by Bob Kane and Ray Burnley helps lift this one a bit above average. The Joker does everything in reverse in the story. His escape from prison begins with the alarm and the search, before the breakout, for example.
As usual, Batman and Robin are one step behind all the way to the end.