80's arcade game about detectives in the 1920's?

Can anyone tell me what game this is? In the 80's there was an arcade game where you played a detective or private eye. I think you wore a white suit. Basically your character just stands there, but he can roll to the left or right with a button called "evade". You can shoot as well. Sometimes someone drops a flower pot on your head from a building. It looks like this games is supposed to take place in the 20's. Sometimes old-fashioned cars will roll up and spray bullets with a Tommy Gun, and you have to "Evade" those bullets. Someone help me remember what this was called. Thank you.