A solitary man unable to sleep for 15 years survives by recording everything he sees and playing it back to differentiate between reality and hallucinations, until he becomes the only witness of a multi million dollar crime and every single person wants to alter his reality.

It is a sci fic in terms that the condition is nonexistent. its a medical trial gone wrong, this person survives thorough a lot of medications and isolation from the world. now his brain has had too many toxins and his only chance for survival is to go into an induced coma and let the brain "heal". But afraid of going insane while he dreams in a coma state, he sets out to fabricate the perfect happy dream, by following and recording a woman who he has fallen in love with, and playing back her videos over and over. However while stalking her he becomes the only witness of _insert crime_, When before she rejected him as a psycho, now she seduces him and starts editing his footage, which until now has been the only connection to reality that he could trust. He is on a race against sanity and his brain switching off, and he needs to fabricate his dream before it turns into a long nightmare.

-- i understand there is a lot of things at play, this log line exercise has been really interesting and thank you all for the feedback. I'll keep working on it :)

That is rather radical surgery to the concept. And, it seems to me, unnecessary. I am drawn to the original premise of a man's testimony being in doubt because of momentary hallucinations arising from his disorder. That's the hook.

I tried to shorten the premise with......When a grieving husband has a stroke he awakens to discover his desire for revenge has become reality.
Best of Luck ;)