Actor Michael Imperioli was so determined to pull off his portrayal of a police detective in new U.S. police drama "Detroit 1-8-7". He enrolled in a training course to learn proper interrogation techniques.

The former "The Sopranos" star plays Detective Louis Fitch on the TV series and he reveals he turned to the professionals for tips on how to perfect the character. Imperioli says, "He (the teacher) was a veteran detective, teaches law enforcement people interrogation (techniques)."

"One thing he said was... when someone commits a crime, it's normally a cry out for something, for need, out of loneliness, something. So somewhere deep inside they wanna open up and you just gotta find the key."