MEET THE HOUSEGUESTS: IT'S ALL RELATIVE

Let the games begin. It's the first show of a new BIG BROTHER season, and this year's theme is Do Not Assume. Project DNA for short. Nothing is as it seems. Everything is open to interpretation. With BIG BROTHER 5, you never know who you're living with for the summer.

This year, there's a twist so big it could impact the lives of the contestants as much or more than if they win the big prize. The big twist? Two of the HouseGuests are related. On BIG BROTHER 5, there might just be a long-lost brother you'd been looking for your whole life or a sister you didn't know you had.

Ranging in age from 21 to 41 and hair color from purple to balding, our HouseGuests hail from all parts of the union. There's Mike, the 41-year-old commercial painter from Eastpointe, Michigan; Diane, the 22-year-old cocktail waitress from Burlington, Kentucky; Michael, the 23-year-old security officer (who's partial to wearing his cowboy hat--even when brushing his teeth) from Durant, Oklahoma and Holly, the Los Angeles model who is named after Hollywood and will only give her age as 20s. Of course, no household is complete without a resident mortician, and BIG BROTHER is no different: it's got 36-year old Marvin the mortician from Conway, South Carolina.

The thirteen gather in front of the House and get their marching orders from host Julie Chen. First to enter the house are Adria, the 30-year-old web designer from Birmingham, Alabama; Lori, the 26-year-old yoga instructor from Boston; Jase, the 28-year-old firefighter from Decatur, Illinois and cowboy Michael. After getting a look at the concrete room--you sleep on a slab--the quartet chooses the wood room.

Next up: Drew, the 22-year-old recent college grad, Holly, Jennifer, the 21-year-old restaurant hostess from San Antonio, Marvin and Scott, the 26-year-old sales rep from Pittsburgh. We get to see a little bit of strategy as Marvin chooses the cot. His philosophy? He wants everybody to think he's "taking one for the team."

The final group rolls in and finds that the worst-case scenario has come true: they will be sleeping on concrete slabs.