The Murder in the Attic

We are in the year 1926... A mad neurologist commits a murder in his house. The police are desperately trying to investigate this case. But there is no trace of the culprit, as the ingenious doctor made the crucial evidence disappear without a trace. Now, it's up to you and your problem-solving skills: Betray the murderer and prevent him from committing more murders! But hurry up! The Nexus Cooperation can only maintain the time travel portal for about 60 minutes. Will you manage to crack the doctor's insane puzzles and secure the hidden evidence in his attic? Or will you remain lost in time and space forever?