I think we have DH saying that he told his doctors about Messel before HW's murder, but I do not think that's been proven as a fact. Everything DH has "reportedly" written (I'd love to see these letters) could have been learned through watching and reading news reports. I would imagine that DH's doctors would have been questioned by now about what he has told them, and if nothing was corroborated then there is nowhere for prosecutors to go in bringing this information into DM's case. As DM's attorney I would absolutely shut this down asap without any proof. I would love to know what the "scandalous" photo was about? Files or parts of files that are "sealed" by the court means just that, they will remain sealed until and/or unless someone successfully petitions the court to unseal them. It is interesting that the media has stayed pretty quiet about the DH letters, usually you might see them publish copies or excerpts or something.
At the end of the day, I am wondering if there is a pretty extensive conspiracy of silence around DM and his trial? Given DM's recent letter to the judge about LS, it sounds like if DM was connected to LS, he is not trying to use that information as leverage in the HW case. While they added the charge of "habitual offender," prosecutors have not yet said whether they will seek the death penalty for DM's case. But it's interesting that the trial keeps getting quietly postponed. At the same time, all of these other "characters" are popping up regarding LS, who may or may not be connected in some way to DM. If LE thinks that DM has information about, or was directly involved, in LS's disappearance, they may be trying to leverage these stories to get DM to talk. Remember, LE spent a great deal of money on those two property searches. That's not done based on just a phoned-in tip. It's also possible that LE knows DM is involved in LS's disappearance, and they want to be sure everything about his HW trial stays absolutely pristine, so that DM gets put away for life (or the death penalty) if they are unable to prove DM's connection to LS. I hate to think that this could be the only justice that LS's family might see, particularly when her parents would not have closure by knowing what happened to her and where she is. But I can see why LE and the court system are being so deliberately careful and strategic about the details surrounding DM's case and trial, because these precautions will ensure that, at least for HW's case, justice will be served.