SCOTUSBlog has this of potential interest.
The petition of the day is:
Issue: Whether Berghuis v. Thompkins requires advice that a suspect has the right to stop talking at any time in order to establish an implied waiver of Miranda rights.
This case illustrates, again if anything did, the value of video and audio recorded interrogations. Oooops. I meant suspect interviews. Interrogation is of course a loaded word, so investigators are cautioned to use the less accusatory and loaded terminology. Just more of the psychology of getting confessions.