Tilden is the Police Department psychiatrist who has been assessing various members of the force.
John Kennex has been seeing since him since his accident. Tilden reported that he believes that John may suffer from depression, trauma-onset OCD, PTSD and psychological rejection of his prosthetic limb. (Eval by Tilden, File #TF102-KJ) 
A recent PolPsych evaluation on Rudy Lom states, “Lom’s high intelligence often alienates him from other members of the department.” This has led to an increasingly isolated role within the organization. (Eval by Tilden, File #LC041-RL) 
Valerie Stahl's recent PolPsych evaluation by Tilden suggests she dedicates much of her personal time to department work, “which may lead to an inappropriate work/life balance.” (Eval by Tilden, File #YM83-VS)