Dick Wolf TV Shows: Biggest, Best Crossover Connections

All is fair in the Dick Wolf universe, including character crossovers and actors appearing in more than one series at a time.

After he started working as a writer Hill Street Blues in 1985, Wolf became a superstar when he created Law & authority in 1990. He has led several since Law & authority spinoffs, including Law & Order: Special Victims Unitwhich premiered in 1999.

Wolf transported viewers from New York City to Chicago in 2012 with the creation of Fire in Chicago. The spinoffs include Chicago police, Chicago Med And Chicago Justice.

Just when fans thought Wolf couldn't possibly have any more procedural drama ideas up his sleeve, he was the mastermind behind the FBI universe, consisting of FBI, FBI: Most Wanted And FBI: International.

Over the years, eagle-eyed fans may have noticed that Wolf has a few favorite actors who have appeared again and again in his series – not counting the entire show's crossovers within the One Chicago and FBI universes.

Scroll down to see which actors took their characters from one franchise to another – and which stars played more than one role for Wolf: