In real life, George McCready (Girard) really was somewhat an art expert, as he and Vincent Price owned an art gallery in Beverly Hills.
In the epilogue, Perry, Della, and Paul are having lunch while reading the newspaper coverage of the dismissed trial. Hamilton Burger stops by and unexpectedly congratulates Perry on a job well done. Perry invites Hamilton to join them for lunch, much to Hamilton's surprise. This is the first time viewers see Hamilton Burger interacting socially with Perry and the gang.