Mystery writer Richard Castle teamed up with NYPD Detective Kate Beckett to help her solve a series of murders that were seemingly based on his novels.  Taken with the adventure, Castle used his contact with the Mayor for  a longer relationship with the NYPD, shadowing Beckett on the job and using her as the inspiration for a new series of detective novels.  The professional relationship becomes personal as they work together to solve more homicides.  Castle airs late night Saturday on WABI-TV5 at 12:30am (occasionally shifting to 1:30 to accommodate other program changes).