For those who are adamant that there couldn't of been 'intruders' aren't thinking this out. The fact that there was no trace evidence well, there was an obvious clean-up attempt afterward. For them to ONLY find one palm print and a few strands of hair, after Travis was bludgeoned 29 times, shot in the head and throat slashed, tells me...someone did a pretty good job cleaning up.
Here's what I think might've happened.
I think Jodi got there and entered the house after being dropped off. Not sure what took place but it doesn't matter. I think at some point, 2 pretend intruders entered the house via the broken screen found outside in the backyard
Edit to add:
This scene was staged in CASE the roommates came home. Jodi pretended to be a victim for Travis' sake.
I think the intruders did wear ski masks, gloves (like Jodi said in the interrogation videos), boots etc. I think Jodi WAS taking photos and this is when the pretend intruders did their thing or let Jodi do her thing.
Why did they help? I don't know. Perhaps Jodi had something over on them and they agreed to help her in lieu of something else. Who knows? We don't have all the details to her life prior to Travis.
Why would Jodi kill Travis (alone) so close to his roommates coming home in the middle of the afternoon? I mean, she could've entered the house in the middle of the night and shot him dead in bed. But the intruders helped accomplish this afternoon killing just in case.
So just because there wasn't any trace evidence doesn't mean anything especially if they were dressed for the cause. And why was Jodi wearing ski/jogging pants in June in Arizona? Maybe she dressed the part afterward so she can escape the scene?
I think the camera was a complete oversight for Jodi thought the other person took it and in the haste to clean up the scene, it accidentally got put in the washer with the other things. There's no way I think Jodi thought the photos would wash away. Why not just take it with her/them? It makes no sense.
I don't have all the answers but this being a consideration, resonates strongly with me.