Investigation of the Case "Wrath"

From the case materials:
"Forgive? God will forgive. I am only human. And I have forgiven none of them. Now they are all dead."

Blind rage always leaves traces. The Alibi headquarters received the materials of the case "WRATH."

A maniac who considered himself the arbiter of justice cold-bloodedly killed five people. The only survivor is locked in a closed psychiatric clinic. The killer's plan seems flawless, but it has no systemic flaw.

Your investigative team must:
• Decipher confusing messages from the psychiatric hospital.
• Prepare interrogation protocols and verify suspects' alibis.
• Calculate the psychopath's algorithm using the crime scene map.

There are no perfect crimes. Do you want to coldly prove this to the Arbiter?