Chaos in death and Possession in death / by J.D. Robb.

Originally published separately. Chaos in death published in 2011 in the anthology The Unquiet. Possession in death published in 2010 in the anthology The Other Side.

Chaos in death -- Possession in Death.

Chaos in Death - Eve Dallas is the tough lieutenant hot on his trail, but this is unlike any case she's ever been assigned - or any killer she's ever pursued. A police sketch based on eye-witness testimony reveals the killer has green skin, swollen red eyes, goblin ears, and a dislocated jaw-structure that defies the human form. Is it a mask? Is it make-up? Or is the explanation more sinister? Dallas faces off against multiple suspects - all of them students of medicine capable of precisely slicing the ears, noses, and eyes of the three victims. But who had the motive? More importantly, what kind of rogue science are these healers practicing?

Possession in Death - 'The devil killed my body. I cannot fight, I cannot find. I cannot free her. You must. You are the one. We speak to the dead.' Immediately after hearing these words, uttered to her by an old Romanian woman bleeding to death in the street, detective Eve Dallas begins to notice that her latest case has come with a number of interesting side-effects: visions of the deceased, instant familiarity with rooms she's never seen before, and fluency in Russian. Likewise, there appears to be a force inside of her, a spirit other than her own, that won't let her rest until she's found Beata, the old woman's great-granddaughter, whose disappearance two months prior remains a mystery. Desperate to be free of her new 'gifts' , Eve pursues the facts until she discovers a link between Beata's disappearance and the disappearance of eight other young women, all of whom attended the same dance classes, none of whom were ever heard from again.