A young woman trapped in a web of dark family secrets finds herself in a dangerous triangle of love, jealousy, and deception, where the truth hides in her past.

Mastroianni plays an ex-diplomat imprisoned for the murder of his wife who is visited by a young woman who is not only his lover but also his step-daughter.

“Beyond the Open Door” — much like the culture-permeating act one finale from this year’s movie-musical “Wicked” — builds to a head, structurally and narratively, opening the ...