The Detective Is Already Dead, Vol. 3 by nigozyu

After being kidnapped, Kimizuka, Natsunagi, Saikawa, and Charlie havelearned thetruth about Siesta's death...or have they? A girl who looksjust like the deceaseddetective appears and informs them that the footagethey've been investigatingcontains an error. As they hunt for ananswer to a mystery that even Siesta couldn'tuncover, the group willlearn what it truly means to inherit the legacy of an acedetective. Thedetective is already dead, and the truth of her death has been alreadybeenrevealed, but it's still too early for the epilogue.
Binding: Paperback / softback