ET has learned that Smart auditioned for a different role a month ago, but wasn't picked for the part. He auditioned again for this role, and was finally cast.
While Smart is primarily known for his dance choreography, acting isn't new to him. Smart has appeared in small roles on a number of different TV shows, including The Big Bang Theory and Benched, as well as the lead role in the feature film Street. He is also set to appear in three films currently in post-production.
Shades of Blue sees Lopez playing a New York City police detective who gets swept up in a world of corruption, dirty cops and crime, until the FBI forces her to turn on the group of corrupt cops she's a part of.