Associate Professor Akira Takatsuki's Conjecture Vol 3

From the Yen Press edition

Fukamachi loses his mysterious ability to distinguish untruths after catching a cold! While he’s out of commission, Professor Takatsuki makes an appearance on a panel next to an actress who claims to have seen ghosts! How will Takatsuki fare in an investigation of her haunted studio with his lie detector on the fritz...?

Source: Yen Press