hello all. i just have one question

In episode ''His red right hand'', 8th episode of 2nd season we found that doctor of 3rd and 4th Red John's victims is dead, dr. Towlen Morning. His body is actually found at the beginning of the episode, naked and placed frozen somewhere outside. It's clear as day he is dead.

Then, in some episode of season 5, actually at the end of episode, we see Jane looking at his book of suspects, and there is a name dr. Towlen Morning and a note: deceased?



My question is why would they do that? Why showing to viewers that doctor, even dead, is still among Jane's evaluation of possible Red John suspect?

Is it something we should consider that in some future episodes, or they are just having a very bad taste and are messing with audience in not right way?