Yeah, think I got carried away with the Halloween vibe but on closer inspection as whole it didn't fire on all cylinders.I love the retro feel of the above episode but the pacing is painfully slow.
Overall, as you said, the show is really hit and miss.
The Autopsy and The Outside were the clear standouts for me.
Outside and The Viewing for me (yes, was a tad laboured pacing wise but style made up for it for me and great seeing Weller on fine form).