Rachel Dratch (“Saturday Night Live”), Wendy Moniz and Trevor St. John (“One Life to Live”) have joined the cast of upcoming drama “The Grief of Others,” set to begin shooting in April in Nyack, N.Y.

Producers are Jim Cummings, Erich Lochner, Matt Miller and Ben Wiessner with Patrick Wang directed from his own screenplay.

The story is based on the novel by Leah Hager Cohen in which a couple’s baby dies 57 hours after his birth and the parents try to return to their previous lives and struggle to regain a semblance of normalcy for themselves and their two children. St. John and Moniz portray the parents.

Other cast members include Oona Laurence, who won an honorary Tony Award for her role in “Matilda the Musical,” Jeremy Shinder, Sonya Harum and Mike Faist.

“The Grief of Others” is the second feature film from Wang, whose debut film “In the Family” was nominated for the 2012 Independent Spirit Award for Best First Feature.

Wang and David Chien have also created an interactive, multimedia iBook entitled “Post Script: The Making of the Film, The Grief of Others.” It will be continuously updated as the film progresses.