First Contact: Q.E.D. iff vol. 5-6 by Motohiro Katou

The simply titled story "Even" opens Motohiro Katou's Q.E.D. iff vol. 5 and begins when Ashikaga Ren, a second-year university student, tumbles down a cliff and needed to be airlifted to the hospital – except this wasn't an ordinary hiking accident. A note was found at the scene ("Got Dumped, Don't Want to Live") turning an unfortunate hiking accident into an attempted suicide. Only for the case to take an unexpected turn at the hospital.

Sou Touma and Kana Mizuhara are in the hospital visiting Mizuhara's father, Inspector Mizuhara, who was injured in the line of duty. Mizuhara passes the hospital room of the still unconscious Ashikaga Ren when she notices his oxygen mask has been removed and the heart rate monitor turned off. She immediately calls a nurse and begins to look around, which leads to her chasing a masked figure in a white doctor's coat through the corridors and down the staircases of the hospital. This masked, white coated figure runs into a dead end hallway and inexplicably disappears into thin air! A short hallway ending in a double door that's not only locked, but securely chained together and padlocked. Only thing the vanished figure left behind is the white doctor's coat. Touma finds out the victim had three people, all fellow students, who visited the hospital that day. So they begin probing the suspects and their relationship with the victim involving relationship troubles, borrowed money and stolen exam papers.

I think what I liked most about this story is how clearly the problem of who, why and how is presented. And liked how they logically linked together with one springing from the other. However, the solution to the disappearance from the dead end corridor, while visually pleasingly, is so blindingly obvious I rejected it out of hand – which kind of betrayed the who and eventually why. Not to mention the vanishing-trick only worked, in a way, because it was shown and not explained in a block of text. So "Even" is not a thoroughly bad story, but neither is it a top-tier entry in the series.

The second story, "The Imperfect Locked Room," has Inspector Mizuhara back on the job and going over a murder scene a second time. Takamatsu Kiminobu, a retired prosecutor, was found stabbed to death in his bedroom of his house. Only other person present was his nurse, Itami Sayoko, who claimed someone had knocked her out. However, the police found all the windows securely locked from the inside, the house keys inside the victim's pockets and "no suspicious people on the security camera at the entrance way" ("so this was a locked room murder"). So the inspector in charge concluded the nurse was the murderer and arrested her. Inspector Mizuhara has his doubts as a nurse has much easier methods at her disposal to kill an sick, elderly man than a knife and casting herself as the only possible suspects. What he finds is fresh evidence the murder took place in garage. So the nurse was released.

This blunder forces the higher ups to send someone down to direct the local investigation. This person is Tanabata Kikuno, Assistant Inspector of MPD Division, who's a young, eager policewoman ever ready to put the handcuffs on the murderer. She learns from Inspector Mizuhara that this case is not going to be easy, considering the status of the policeman who made the premature arrest. Inspector Mizuhara also tells her the case possibly has a connection to an unsolved, seemingly impossible and unsolved murder, nearly two years ago, when a dying woman was found in one of the toilet stalls of a night club, but CCTV footage showed nobody going inside – except the victim and the people who discovered the murder. So, inevitably, Tanabata Kikuno meets Sou Touma and Kana Mizuhara leading to the solution to the two murders. Once again, the plot has its weak points as the murderer stands out and the solutions to the impossible crimes lack Katou's customary imaginative solutions or even simplistic complexity. The locked room-trick used for the murder at the night club toilets was especially unconvincing with the first one turning on the why rather than the how. It really is the strong ending that holds “The Imperfect Locked Room” together.

Fortunately, the two stories making up Q.E.D. iff vol. 6 is a return to form and starts with a character-piece, "The Man Who Claimed to Land on the Earth." This story begins with a prologue set in 1986 when a young woman, Morita Kinue, is living in America with a man named Dominic. Something her parents back in Japan oppose and beg her to come, but she refuses and ends up giving birth to a son, Wataru. Morita Kinue has been cut off by her parents and Wataru grows up in poverty, until he joins a youth gang and dies in a shootout aged 14. The story then moves to the present and marks the return of Enari "Queen" Himeko, Nagaie "Holmes" Koroku and Morito "Mulder" Orisato who last appeared in Q.E.D. Vol. 44. They're now in university and have opened the Mystery Research Society, but this story is not about their usual shenanigans. This time, Mulder seems to have a problem that truly appears to be out of this world.

A blond foreigner, named Simon, turned up out of nowhere at his grandmother's house to start taking care of her, but even stranger is his claim to have landed on Earth from another planet ("...I used a wormhole to shorten the distance"). Naturally, the family's more than a little suspicious, but their grandmother refused to show him the door. And a secret DNA test reveals the mysterious Simon to be related to them. So they go to Sou Touma who becomes very interested when he hears Simon has been talking about "cosmic strings, wormholes, casimir's effect and other such strange terms." Simon showcases some of his other worldly abilities by vanishing from a closely watched changing room and appearing inside a locked house, but don't read this story for those fairly minor locked room situation. This is one of those character-puzzles and it's not even about who Simon really is. It's about why he's there and why he choose to tell such an outlandish story. This is more like the Katou I know and like!

The last story from vol. 6, "Sudden Change," allows me to end this double review on a high note. Kana Mizuhara is on a part time job delivering coffee when she walked into a police investigation.

Egota Wataru is the producer behind the popular TV show Nangoku Cop, "the detective drama where the guy uses handcuffs like an acrobat," who was having a meeting with the cast and crew to discuss the next season of the show. Somehow, he ended up on the roof and either accidentally fell to his death or jumped on purpose, but soon, the possibility of murder turns up. A possibility turning an accidental death or suicide into an impossible murder as nobody could have reached the roof when he fell from it. And everyone has an alibi. You can definitely spot the murderer, one aspect simply invites suspicion, but figuring out how it was done is bit trickier. Touma understands what can happen when someone finds themselves in an inescapable situation. Katou brilliantly fused the problem of the locked room mystery with that of the unbreakable alibi, complimented by an unexpectedly dark twist in the motive. A must-read for fans of Tetsuya Ayukawa and a fantastic story to end this review on.