but that's okay—her twin sister is here to the rescue. Even though she sounds like she might be in a different room, this baby girl hears her sister's crying, and suddenly stops her own.

When it comes to TV and movies, however, a director may actually want a baby to cry on command ... when you see a TV show or a film, twins are used to play one role. Narrator: There's also ...

One of the twins, in particular, was easily irritable and had a high-pitched cry while being “difficult to console.” On Nov. 5, the twins were suffering from withdrawal and placed on methadone.