John The Contractor News Today : Breaking News, Live Updates & Top Stories | Vimarsana

For a short walk home and run right into john the contractor. >> oh, what's up, guys? how are you? you are the one that plays soccer, right? >> yeah. >> reporter: and their parents are on pins and needles as john reels them in. hey, can one of you jump in there to help me put this in? >> reporter: the boys step closer. their parents hope they remember the rules and call them first before ever getting in. then surij, the family rule breaker, does something terrifying. >> wow. >> reporter: but his old brother, the responsible one, holds back, keeping one foot on the sidewalk. so ude is not feeli...

Never do that. >> okay. >> reporter: this time, it's dark out when john comes knocking. [ door bell rings ] >> she watches intensely as her daughter approaches the door. [ dogs barking ] >> reporter: and then --. my god, she opens the door. >> remember me, john? i have one quick measurement to do? >> reporter: danielle's mom can't believe her eyes as sh her daughter lets john in and then makes one critical mistake. >> sorry, my parents aren't home now. >> reporter: she lets the actor know she is home alone. >> oh, i'm in shock. i'm in complete shock she did that. >> reporter: a 12-year-old gir...

So, what are your predictions? >> i predict that sam will let him right in. >> how would you feel about it if he does let john right in? >> bad. i'm already getting upset, like i didn't do the right thing. >> reporter: now, our hidden cameras are rolling and we are watching as john, the contractor, walks up to their house. [ door bell rings ] will sam remember what to do? or will he let him inside? >> my heart's pounding. coming up, sam's mom has told him the rules. >> i've told him to hide. i have told him not to answer the door when i'm not home. for no one. >> but when he sees the friendl...

One of those kind of gals. i will do it. i will do it. >> reporter: did sophie's mom do enough to prepare her for this test? remember, most predators respect strangers but people who kids have met before. >> john. nice to meet you. >> reporter: earlier in the week, john the contractor dropped by their house and talked to sophie about paint colors for her room. now, a few days later, as john waits to run into sophie on the sidewalk, her mom is around the corner with me in the watchmobile. what do you think she will do? >> she will poe lightly decline. >> let's see if your kid would never do tha...

You with hidden cameras, doing a showalled y kid would never do that." i tell her john was an actor we hired to test her. >> guess what you did? >> i let him in. [ laughter ] >> i'm so shocked. >> why did you trust him? >> i don't know. i don't know. just a feeling. i didn't think he was gonna do anything wrong. >> the only reason why i agreed to do this is hopefully, it will cause parents to talk to their kids over and over again in ways that might save their lives. all right. i love you. she is a great kid. >> she is a great kid. >> reporter: our expert says there is one clear message you sh...