80's kids show w/ mouse and security guard named Samuel Crenshaw set in a department store?

Question

I can barely remember a show I watched as a kid about a department store after hours? All I can remember is a puppet mouse and a nonhuman security guard whose name was something like Samuel T. Crenshaw. Can you help me? Please this is drivingme crazy.

Answer 1

Today's Special

http://epguides.com/TodaysSpecial/guide....

http://us.imdb.com/title/tt0198253/plots...

I remember this show when I was a little girl.  The show was on in the early 1980s.