Associate Professor Akira Takatsuki's Conjecture, Vol. 2 (manga)

Can the mystery-loving associate professor be a cursed young lady's savior? Naoya Fukamachi is a university student with the ability to detect lies, and he's ended up with a part-time job investigating odd happenings with associate professor Akira Takatsuki. What spine-chilling secret will they discover hiding behind the case of the young woman who spits needles?