A spin-off from popular Japanese TV series "Galileo". Episode XX tells the story of female detective Utsumi Kaoru's final case before she went to Oklahoma for further training.

A male corpse is discovered with a smashed face and burned hands. Strangely, the cause of death is determined to be strangulation. When Detective Kaoru Utsumi attempts to corroborate the victim’s ex-wife’s alibi she discovers the mysterious neighbor and only a few small clues to help her disprove a seemingly "airtight" alibi...