and then those vests were purchased with a mastercard debit card, that went back to scott. >> reporter: with that mastercard scott catt might as well have left his calling card. and there his kids are using it heist. it was just the break detectives needed. and the catts were in the bag >> when scott was arrested -- the -- the detective that actually made contact with him told him, "well, you're under and -- scott's initial response to that was, "which one?" >> reporter: they quickly arrested hayden as well, who was up in the apartment. there they found the kind of evidence gumshoes dream of. >> in the apartment -- we found strap is a little paper strap that wraps around -- a certain quantity of money. usually it's $1,000 denominations, and it identifies whatever bank it is that it comes from. >> reporter: and some of those straps were from a bank in an entirely different state! suddenly they realize catt is no rookie, but a bank bandit with a they now had more than enough evidence to haul both catts in for questioning, and authorities were zeroing in on abby, too. employees at the comerica bank, we knew that at least