How was the murder done?
From there, what evidence do the authorities have to go with?
We need some details here!
The story is like this:
1. Players con their way into a party in a rich guy's estate. They arrive there as journalists (false identities, or rather stolen ones). They rob his safe during the party (actually, another person robs it, but they catch up to the person and reclaim the item) and get away (mostly unnoticed). The Players were accompanied by a NPC runner, who they hired just for this job (face/safe-cracker).
2. During the same night, after the party, the guy and some of his maids/guards are shot and the whole building is torched. They players were already far away, in a different district, getting ready to sleep. The murders and arson were done by a different team (working with the rich guy's wife). This team has lots of resources at its disposal (corp-funded, because it's a bigger plot).
3. So far I've come up with this possible evidence:
- the wife's false testimony (about them visiting the rich guy, which they actually did before the party to scout the building, and about them threatening him, which they didn't do)
- fragments of a video recorded by the NPC runner's gear (glasses), which was tinkered with and now shows a big fire behind their car during the getaway
- NPC runner's false testimony claiming, that he didn't know that they wanted to kill the guy and torch the place, but they did it anyway (he is coerced into saying this)
- there is proof of their attendance at the party - they only looped the cameras in the room with the safe. Some attendees may also remember them, although by their false identities.
So they actually were in said place the same night, just didn't do the stuff that they're being accused of doing. They might have left some DNA evidence, although most if not all would probably get destroyed in the fire.
Ideally, the evidence would be just so overwhelming, that it would look suspicious even to Dana.