SEATTLE -- A Seattle couple has turned private detective, trying to get their stolen car and identities back.

Someone not only stole their car while they slept, but also took their wallets and keys to the house.

As soon they discovered the problem, Brian and Constance Murphy immediately called the police and the credit card company. They got a rundown of every business the thief used their card and went asking for surveillance.

Constance scored at Magnolia 76 gas station. The owner showed her the video from the time the credit card company had for the transaction on her card.

The video shows a woman walk inside and shop around. Constance immediately spotted her purse – in a stranger’s hand.

"I knew immediately I had the right person," she said. "And then I just got angry that she would have enough guts to just walk around with my identity."

The thief eventually bought a pack of cigarettes.

The trail began when the thief used the Murphys' credit card at 5 a.m. to buy breakfast at McDonalds and a movie rental at a Red Box. Some 20 minutes later, it was used at a Walgreens.

"You know, could it have been that she was needy -- you know needed to buy diapers?" Constance Murphy wondered. "No, it was purely selfish. She bought $40 worth of makeup and I had a whole bag of makeup in the car -- what did she need new makeup for?"

While Constance went after video at that store, her husband Brian worked on the other businesses on the list: a Bartell Drugs on Capitol Hill, and a parking lot.

It was a little difficult to nail down the exact lot, but the owners helped Brian out, by figuring it was down to one of three lots on Capitol Hill. His brother was closer, so he rushed over to check it out. Brian figures his brother missed the thief by about 10 minutes.

"I want the baby seats back, you know the car can be replaced, you know the baby seats, we bought them at the store," Brian Murphy said. "I mean, I have pictures of buying those seats because I thought never I'd have kids, let alone be married, let alone have a 7th anniversary. I mean when you get stuff taken from you, the sentimental value of the things that are gone are the things that hurt the most."

The Murphys aren't taking any more chances. They've already changed all the locks on the house and they're also keeping the garage door closed all the time.

Their stolen car is a dark blue Metallic 2007 Toyota Siena minivan. If you've seen that van or the woman in the surveillance, call Seattle Police.