The Best Movies and TV Shows Like The Detective Is Already Dead

Kimizuka Kimihiko is a magnet for bizarre troubles, a reality that shifts forever on an ordinary hijacked airplane when he is drafted to be the assistant to Siesta, a self-proclaimed legendary, silver-haired detective. Thus begins a dazzling three-year whirlwind of global conspiracies, eccentric villains, and globe-trotting adventures against the sinister secret society known as SPES, a shadowy organization creating genetically altered human monstrosities. Despite Siesta’s eccentricities, bossy demeanor, and penchant for dragging him into mortal peril, a profound bond forms between the pragmatic teenager and the extraordinary investigator. However, this partnership is brutally cut short when tragedy strikes, leaving Siesta dead and Kimizuka shattered, retreating into an isolated, mundane high school existence to cope with his immense grief and survivor's guilt.The solitude is shattered when Kimizuka is approached by Nagisa Natsunagi, a young girl seeking a detective to investigate a mysterious client. Nagisa carries a physical and metaphorical piece of Siesta within her: a transplanted heart that inexplicably holds the legendary detective's memories and lingering will. Drawn back into the fray, Kimizuka accepts, sparking a new chapter of investigations. He soon encounters other figures from his past, including Charlotte Arisaka Anderson, a famous British detective and former rival, and Yui Saikawa, a brilliant pop idol. Together, this makeshift family uncovers that SPES is far from defeated; their leader, Hel, seeks to harvest Siesta’s remaining essence to achieve ultimate divinity.As the battle lines are drawn, shocking revelations emerge regarding Siesta’s demise and the true nature of SPES’s biological abominations. Kimizuka discovers that Siesta’s consciousness is slowly awakening inside Nagisa, fighting for control. Driven by a desperate redemption arc, Kimizuka vows to protect Nagisa and dismantle SPES once and for all. The narrative twists through elaborate deceptions, high-stakes confrontations, and emotional reunions, culminating in a fierce psychological and physical war against the architects of human modification. Kimizuka evolves from a reluctant, passive bystander into a proactive protector, fiercely determined to honor Siesta’s legacy. In the end, the line between life and death blurs as the brilliant detective’s indomitable spirit orchestrates one final, grand deduction from the shadows. Through intellect, sacrifice, and the enduring power of connection, Kimizuka confronts his deepest trauma, proving that while Siesta may already be dead, her brilliant impact on the world and those she loved continues to fight on.