The play premiered on Broadway in 2006, and it has also been produced by regional theatres in cities such as Los Angeles, Philadelphia and Pittsburgh.

The play had its Spanish language premiere in San Juan, Puerto Rico in the Autumn of 2010.

The play deals with how family members survive a major loss and includes comedy as well as tragedy.

Tension is created as Becca's mourning for her lost child lingers, and she is suspicious of Izzy's ability to raise her own.

He enjoys science fiction and writes a story about wormholes to other dimensions in Danny's memory, which he publishes in the school's literary magazine.

[9] The play was originally commissioned by South Coast Repertory, Costa Mesa, California, and first presented at its Pacific Playwrights Festival reading series in 2005.

Cynthia Nixon won the 2006 Tony Award, Best Performance by a Leading Actress in a Play.

[13] The Spanish version Los universos paralelos premiered at the Teatro Palacio Valdés de Avilés on 17 March 2017.

It starred Malena Alterio, Daniel Grao, Carmen Balagué, Belén Cuesta and Itzan Escamilla and was directed by David Serrano.

The movie adaptation, directed by John Cameron Mitchell, premiered at the Toronto International Film Festival in September 2010 and received a limited theatrical release in December 2010.

Nicole Kidman stars as Becca Corbett, the character originally played by Nixon.

[15] Other cast members include Dianne Wiest, Tammy Blanchard, Giancarlo Esposito and Sandra Oh.