https://www.imdb.com/title/tt0099817/?ref_=tt_ch

Drug Dealers from outer space harvesting endorphines from human victims.

The project was initially titled "Lethal Contact" (as it was first written in 1984 as a spec script by Jonathan Tydor). The production, filming and international title is "Dark Angel", and was released as such worldwide, before it was changed to "I Come in Peace" for the late U.S. release, because of two other existing movies entitled "The Dark Angel" (from 1925 and 1935).