Although Prentiss is back in the first season and everyone will be happy to be alive, does not mean that has to be some residual anger that has happened. The team took it hard when JJ told them that he did not off the table, "Lauren", and it was JJ Reid, who comforted her when she was upset that do not have the chance to say goodbye. It is understandable that he would not be ready to forgive and forget just undergone.
This is also an episode of Criminal Minds, where Andy visit a milder and Tracy Middendorf, and should be a very horrible accident. Sounds like a unsub away from the victim, "the senses, and it seems that would make it very annoying. Unsub If you take one out of every sacrifice, means that five or could be made that needs to be done in groups of five so that there might be ten, fifteen, or even more victims in its wake? The BAU can stop it before the number of losses may be too high?