From left: Barbara Walters, Mariah Carey, Monroe, Nick Cannon and Moroccan
10/18/2011 at 02:40 PM EDT
Six months after their very special third-anniversary gift – the birth of their twins
– Mariah Carey
and husband Nick Cannon
are ready to give the world an inside peek at their family life.
Son Moroccan Scott and daughter Monroe
– their folks call them Roc and Roe
– are introduced to Barbara Walters, who interviews the parents inside their Manhattan apartment. The segment airs on Friday's 20/20
at 10 p.m. ET.
In a teaser clip
, Walters asks Carey if she trusts Cannon. "Sometimes," replies the songbird, as Walters raises her eyebrows.