I Come in Peace (released worldwide as Dark Angel) is a 1990 science fiction action thriller film about a rule-breaking vice cop who becomes involved in the investigation of a number of mysterious drug-related murders on the streets of Houston, Texas. The film was directed by Craig R. Baxley, and stars Dolph Lundgren, Brian Benben, Betsy Brantley and David Ackroyd.

Houston cop Jack Caine (Dolph Lundgren) isn’t about to let the rules of police procedure prevent him from single-handedly wiping out the White Boys, a gang of ultra white-collar drug dealers who killed his partner while Caine was waylayed stopping a convenience store robbery. Unfortunately for Caine, more trouble is heading his way, but then again, Caine is the kind of cop that was born for trouble and made to solve it.

The White boys disguise their aberrant narcotics trafficking behind rows of expensive european luxury sports cars, executive-level jobs, and flashy designer suits. Led by vicious but urbane uber white-collar crook Victor Manning, the White Boys operate above direct accusation, but not suspicion. Law enrforcement knows they are dirty, but can't prove it. Caine knows it too, but is determined to bring them down.

Caine’s superior want him to lay low, and is tired of his unusual tactics. His girlfriend, coroner Diane Pallone (Betsy Brantley), wants him to make a commitment to their relationship.

When the White Boys steal a shipment of Heroin (their drug product of choice)from a federal evidence repository, they kill and injure numerous people by blowing up the facility with a powerful bomb to conceal their involvement. This brings down the wrath of the FBI into Houston, and into Caine's vendetta against the White Boys.

Caine’s new by-the-book partner, FBI agent Laurence Smith (Brian Benben), brought in to investigate the drug theft and the subsequent murder of several key White Boys soldiers, wants him to shape up and toe the line of following official federal investigative procedure. But, Caine will have none of Smith's interference, and begins to suspect that the Feds are investigating more than the White Boys activities.

Caine’s instincts soon prove right - there’s more to this matter than meets the eye. The first clue is the murder weapon used in the White Boys’ massacre; a hyper-fast, super-sharp, deadly vibrating disk like nothing Caine or Smith has ever seen. The second is a series of drug-related killings that have Diane—and everyone else—very puzzled.

The corpses are full of heroin, but the cause of death isn’t overdose. Caine and Smith don’t follow the department manual in their pursuit of answers. They end up on the trail of Talec (Matthias Hues), a vicious drug dealer from outer space.

Talec shoots his victims full of dope, then uses otherworldly technology to extract endorphins from their brains, synthesizing them into a substance to be peddled to addicts on his home planet.

Talec is being pursued by an alien cop named Azeck (Jay Bilas), who warns Caine and Smith that if Talec isn’t stopped, he’ll pave the way for thousands of intergalactic drug thugs to come to Earth and slaughter its population.

Putting their differences aside, Smith and Caine team up to pursue Talec.