Arson, Inc.

Arson, Inc. is a 1949 American film directed by William Berke. It is also known as Firebug Squad and Three Alarm Fire.

The reason why Joe Martin gets the assignment is because his predecessor in the Arson Detail was killed when inspecting the very same fire site. The predessors file with his findings wasnt found on his body and hasnt been recovered. This is just one of many equally suspicious fires in the last few years, where the insurance claims following the fires has been filed by the same agent, Frederick P. Fender. There is suspicion that Fender is somehow involved in the disappearance of all the destroyed stores goods as well.Joe begins with Peyson, the store owner, and visits his apartment that was also raged by fire not long ago. He meets the babysitter, Jane, a pretty young teacher, and they get along so well that Joe drives her home and ask her out on a date the next evening. ........

Source: Wikipedia