If you love all things Dick Wolf, then this Chicago Fire, Chicago P.D. and Law and Order: SVU collaboration is just for you.

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This three-part crossover event, which began Tuesady night, shared a story line about the efforts of trying to solve a child pornography ring case.

According to TV Guide, last night the case began on Chicago Fire when the team was forced to battle a house fire and Detective Severide sees a man returning to the burning building to retrieve a box that contains child pornography and Chicago P.D. detectives Voight and Lindsay are called to investigate the crime.

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The audience later learns that photos in the box were taken in New York and that is when Lindsey puts in a call to detectives at New York's Special Victims Unit. Despite the fact there are no spoilers, viewers will definitely been in for a treat.

Executive Producer Warren Leight told TV Guide that when he got the call from Wolf about a crossover event he was a little hesistant. "I thought, 'Oh man, don't do this,'" Leight said, "because logistically it's a nightmare."

Wolf believed that linking the two Chicago-based shows made a lot of sense because they both take place in Chicago, while drawing in New York-based Law and Order: SVU was a "little tricky.' "But it wasn't too far-fetched to develop a story about child pornography that crosses state lines."

You can catch part two of the cross over event tonight, on Law and Order: SVU at 9/8c and then concluding on Chicago P.D. at 10 p.m. on NBC.

Tags: Law And Order SVU Chicago Fire NBC Chicago PD Dick Wolf