I remember I watched this move some years ago but couldn't remember it. I finally found it again and properly watched it.

I was expecting it to be a very original movie, but it turned out to be very dumb.

The girl's motives are bad. She loves the guy and betrays him so he's pay more attention to her? The message falling after weeks of being still on the window? Mr B died on accident because he was in hurry, but he had time to write on his diary and write a letter to send later. And when Jasper saw the last pic, how didn't he remember they alrdy had done that in the past with with "friend" sleeping close to them?

Why would Jasper gamble on a gangster? There are so many legal ways to earn money if one knows the future, why risk his life?

And in the end the basic question wasn't answered. Would they be able to change the past, or were they locked into following whatever the photo showed?

Where was he taking the ideas for the paintings from, if it was him who was painting them?

It's a nice idea, sadly it was badly implemented into a plot.