Who's That Knocking at My Door, originally titled I Call First, is a 1967 American independent drama film written and directed by Martin Scorsese, and starring Harvey Keitel and Zina Bethune.

[2] The story follows Italian-American J.R. (Keitel) as he struggles to accept the secret hidden by his independent and free-spirited girlfriend (Bethune).

In 1967, the romance plot with Zina Bethune was introduced and spliced together with the earlier film, and the title was changed to I Call First.

[citation needed] Scorsese was unable to find a distributor for the film and moved to Amsterdam, where he directed commercials with Richard Coll.

Manoogian told Scorsese that Joseph Brenner, a exploitation distributor, wanted to distribute the film as a way to enter the mainstream industry.

Brenner requested that a nude scene be added and Scorsese filmed one over the course of two days in Amsterdam with Keitel and Anne Collette.

The review later stated, "Scorsese occasionally brings the film to life, as in a weekend drive by J.R. and two buddies to an upstate village where the camera shows up their 'big city' shallowness in comparison to the townspeople.

Generally, however, his script and direction lack any dramatic value and give far too much exposure to sexual fantasies on the part of the boy.

"[11] Vincent Canby of The New York Times acknowledged that Scorsese has "composed a fluid, technically proficient movie, more intense and sincere than most commercial releases."

[12] On Metacritic, the film has a weighted average score of 63 out of 100 based on nine critics, indicating "generally favorable reviews".