Doppelganger  (1993) from Johnny Web (Uncle Scoopy; Greg Wroblewski) and Tuna

Doppelganger is a movie that almost worked.

Almost.

It starts out with a mystery that may be psychological or supernatural. Drew Barrymore plays a woman who may or may not have murdered some members of her family. Could she have committed them in one of her multiple personalities, or is there truly a physical doppelganger, a supernatural being split from her own personality, an exact physical double which represents her evil side. 

• The first 75 minutes of the film are very confusing, because some of the evidence points to Drew, and some of it supports the existence of a doppelganger. There are also other mysterious inexplicable circumstances that seem to be supernatural. Drew's roommate, who is trying to help her, keeps running into people who either are dead or never existed at all.
• Then the film presents an explanation which, while improbable and perhaps unnecessarily complicated, does manage to explain why the clues pointed in both directions, and provides a logical (if contrived) explanation for the existence of the doppelganger as well as the other mysterious non-existent people. Good enough. I was satisfied for about a minute and I thought the film would end in another minute or so, as soon as the bad guy finished his official movie bad guy "let me hold a gun on you while I explain the plot" speech.
• Then, the next ten minutes provides some of the craziest, most over-the-top nonsense I've ever seen, as well of some of the cheesiest special effects. It turns out that even though there was an answer to the mystery in the natural world, there is some insane supernatural nonsense afoot, and it seems to have no bearing at all on the previous activity in the film!
• Finally, in the last minute, the film does one of those "what the ... ? " moments where the scene is handled in such an ominous manner, with the looks they exchange, the things the camera focuses on, and the eerie music, that we realize that something important and mysterious just happened to end the movie. Unfortunately, is is too important and mysterious to be shared with the audience, and we have no idea what it is, or what it is supposed to mean.

I guess they will tell us everything in Doppelganger 2, or perhaps it will be called Trippelganger.

Tuna's comments in yellow:

Doppelganger, aka "Doppelganger: The Evil Within" (1993) is a straight-to-vid horror thriller staring Drew Barrymore as a girl who moves from New York to LA after the brutal murder of her mother, which she is suspected of. She rents a room from wannabe writer George Newbern. He learns of her belief that she has a Doppelganger, an evil alter ego, that killed her mother and is after her. Her shrink follows her to LA, and there is a brother who was accused of killing his father, or was it the brother's Doppelganger that killed the father? Or was it Drew? Or Drew's doppelganger? Or was it the shrink, who pretended to be everyone's Doppelganger because he had the hots for Barrymore?

Or maybe I was the Doppelganger ...

This is one of the more muddled films I have sat through lately. On the plus side, we see Drew's breasts, first in a shower scene, where the nozzle starts spraying blood for no good reason, and then in a sex scene with Newbern. End plusses. The film is too convoluted to care much about, and the properties of a Doppelganger seemed to get redefined after each day of shooting, when they looked at the footage.