Transcript for What Would You Do: Woman steals laundry at a laundromat
Laundry day. It can be quite a drag. So today, we're putting a "What would you do?" Spin on it. Kateri is on the prowl for some new clothes at the park plaza laundromat in matawan, new Jersey. I love doing laundry. You never know what you're going to find in the driers. And the best part is -- it's free! Reporter: She bides her time waiting for the right moment. Excuse me. I think I left my wallet in my car do you mind keeping an eye on my machine? Take your time. Reporter: The perfect opportunity to sort through laundry. It's just my size! Reporter: If you saw this C callous crook stealing clothes from someone else's dryer -- I like your sweater! Thank, I just got it. Reporter: What would you do? Excuse me, I'm so sorry. I just need to run to my car to get some change for the dryer. Reporter: This father takes Diana's request very seriously. Do you mind just watching, it's the last one. Which one? Reporter: Asking her to confirm the dryer before agreeing. Thank you. The top one. Reporter: Will he be as thorough with our thief? With dad preoccupied, kateri makes her move, but she doesn't account for his sidekick. Go! Reporter: And together, father and son confront our thief. Um, excuse me. Hi. Hi. Somebody was using that dryer. Can you put the clothes please? Right now. Back in there. Oh, don't worry about it. It's just clothes, it's fine. They're not yours. If I move, you're going to be in big trouble. No big deal. Just clothes. Reporter: But he keeps his word. And now, she's in trouble. Clothes back in the washer, dryer, please. They're just clothing. She's not even going to find out. She will, because I'm here. But if you don't say anything -- I'll say it. I will say it. But it's really no big deal. Don't push me to the limits that I can snatch your bag. Reporter: She never stood a chance. Back in the laundromat -- Excuse me? Do you think you can just watch my machine? No problem. I'll be right back. Reporter: Kateri is back to her thieving ways. And once again, a customer comes to the rescue. It's that lady's clothes. Don't worry. She's not going to notice. It's fine. She's not going to notice. It's just a bra. Okay, because she asked us to watch it. Don't tell her anything, keep it a secret. I don't think that's right. One second. Reporter: While he notifies our manager -- She's taking clothes from a couple of counters. Who? The lady in the hair. So, you may want to watch what she's up to. Reporter: A second customer grills our thief. Who is she? Oh, I don't know. You don't know her and you're taking her stuff? No, no, it doesn't But, you can't take it. I just told her, she asked me to watch the machine. Oh, hi. Reporter: How are you doing? I'm John Quinones. Oh. Reporter: Tell us why you did what you did. She gave me a responsibility and I felt that's the right thing to do. There's more good in the world than bad. Somebody must have earned a lot of money to go ahead and pay for their clothes. Reporter: As we cycle through the day, some customers don't confront our thief. Telling us they didn't notice. Or were worried about getting involved. Thank you so much. You're well come. Someone's using that. I'm borrowing her stuff. I don't think she'll care. Oh, okay. Reporter: This customer prefers not to get her hands dirty over underwear. If she's stealing your Brar, she's obviously crazy, I would leave it alone, but it's -- up to you. Reporter: But will she change her tune if our thief strikes again? This isn't your machine, right? No, I don't know whose it is. Cool. Is that yours? No, no. So why are you taking it? Nobody's going to notice. Yeah, but you're stealing someone's clothes. If you don't say anything, no one will know. Am I going Insane? She's stealing someone's clothes. She stole her bras out of the dryer. And now she stole someone else's clothes there. Am I going Crazy? Reporter: No, ma'am. You're on "What would you do?" What's going on here? Hi, I'm John Quinones. Not! Reporter: You were just totally blown away. I've been around a lot of crazy people, sometimes just let it go, it's just a bra. Reporter: It's not worth it? But then it was shirts and people's things and what if someone, if -- I know if I came back and I was looking for my laundry, I would be pissed. Reporter: We're rolling one last time. Excuse me. Do you mind watching this machine, please? Which one, that one? This one, it's just that one. All right. Reporter: But we mix things up and now kateri says the clothes are hers. You got the wrong machine. I don't think that's your stuff. No, no. This is my stuff. Reporter: Alex Hoffman doesn't seem to buy it. But will he raise his concerns to Diana? Lady here was taking stuff out of your dryer and put it in her bag. What lady? This one, in the black pants and the tan shirt. Reporter: He wastes no time airing out her dirty laundry. If you look in her bag, she's got all her bras and everything in there and stuff -- that Is nasty. No, I definitely didn't do anything. I don't know why you're making that up. I'm not making it up. She went in this one? Yeah, she went in there. No, no, I've only been down there. Are you missing bras? Yeah, I'm missing my bras. If you didn't take anything, maybe just show her the bag. Where is it? I don't know, it's somewhere in your bag. Show her your bag! If you didn't take it. All right, look. Reporter: Time for us to come clean. You are sure you saw that? Oh, man. I thought I was losing my mind for a second. I was like, "I gotta wash my baseball stuff before my game!" Reporter: Why did you say something? Because that's somebody else's stuff. Reporter: What if it's just a t-shirt, a bra, whatever she took? It's not that serious, but going in and stealing other people's stuff -- people work hard for these things. Reporter: What's the moral of the story here? I think some people in this world, they're afraid to speak up, you know, and I think that's a big issue right now. You got to speak up, you got to say something. It's not right. Thank you so much.
This transcript has been automatically generated and may not be 100% accurate.