If you get multiball from lower saucer mystery, you can plunge to upper saucer to start 3-ball multiball.
Complete squad cars 1-7 in order. Each one lights a hurry-up bonus for the next one.
Short plunge for car #1.
Multiball on mystery - you get to choose your award (arrests or points) for completing cars 1-7 during multiball. Award grows after car 7.
Points award for multiball first 7 cars is 1M. Award for 2nd 7 cars is 5M(!!!). I don't know why you'd choose arrests in tournament.