If you liked the Spiral anime, the Anime-Planet community thinks you'd like:
Kaihe is a high school student who has been given the task of becoming the chairperson for St Luminous, a private religious school for girls, after his grandfather died. Kaihe, along with a friend, arrives at the school to take care of business. But soon, mysterious disappearances start to happen. Will he unravel the mystery of the school and its past before its too late?
Tachibana Sakon is a skilled puppeteer with an unusual hobby: solving murders. Along with Ukon, a one-of-a-kind puppet made in the Meiji era, Sakon manages to find himself in a variety of life-threatening situations. Join the duo as they put their detective skills to the test in terrifying cases of revenge, malice, and murder.
Hakaze, princess of the Kusaribe mage clan, has been betrayed and marooned on an island by her own people. They seek to revive the Tree of Exodus, an incomprehensibly powerful entity of alien origin, to save the world from the tyranny of its antithesis: the Tree of Genesis that powers their magic. Hakaze, however, believes their efforts put humanity in jeopardy; and with her power limited, she can only reach out to the world to beg for aid. Her call reaches Mahiro Fuwa, a young man grieving the mysterious death of his sister, Aika. He and his friend Yoshino agree to help - on the condition that Hakaze track down Aika's killer with her magic. The deal is made, and the battle that will determine civilization's fate is begun: but who will play the part of its villain, and who its savior?
In both shows, the characters are thrown into complicated situations where they must use reason to solve crimes, rescue themselves from a death trap, and question everything they thought to be true. If you enjoy fighting with logic in life or death situations, then both of these shows are for you.
Area 11 is still under Britannian rule and the Elevens remain brutally oppressed; what’s more, their saviour, Zero, is nowhere to be found and all of Britannia believes the rebellion is finally over. Elsewhere, having lost the battle, Lelouch sets his sights upon winning the war – but the task is no easier since the Britannian forces have learned some valuable lessons all of their own. Not only have they discovered his identity and captured many of his Black Knights, but they now manipulate the memories of all of his friends. Worst of all, they have taken the most precious thing in his life – his dear sister, Nunnally. With his hatred for the Britannians stronger than ever before, Lelouch must now recuperate his forces and bring their rule of terror to an end.
Both shows have a head strong leading man, whom are highly intelegent. LeLouch and Ayumu Narumi have both suffered from tramatic events in their childhood and are now on a mission to unlock the past, preasent, and future.
Kogoro, Conan and the rest of the gang have arrived at Miracle Land for a special and mysterious job. Upon their arrival, the client’s aide passes out a free park pass – a bracelet - to each of the kids and adults, and sends everyone but Conan and Kogoro on their way. Unfortunately for our heroes, the client is anything but kind; three detectives before them have been summoned to solve his mystery, and three detectives have been killed – via the explosive device in the bracelets – for not being able to solve it in time. Unless Conan and Kogoro use their powers of deduction to solve the mystery by the evening, they and all of their friends will die! They will be joined by Kaitou Kid and other familiar faces; can they discover the identity of the client and figure out the mystery in time?
Though I don't believe Spiral is a good recommendation for all things Conan, I definitely think it fits well with Movie 10. Both are detective dramas of course, but both also specifically have deadly consequences and are, at their hearts, thrillers. If you liked one, try out the other.