I am a movie director and I just received the following movie plot. Could you help me answer this question? If not, let me know by writing "Not answerable". Plot title: The Bone Collector Movie plot: The credits appear over newspaper articles and photos detailing the successful career of forensic expert Lincoln Rhyme (Denzel Washington). One story details Rhyme's involvement in convicting a cop.Rhyme is investigating a transit cop's death in a sewer tunnel when a falling concrete beam crushed him. He wakes up in a hospital bed, a quadriplegic. A man and his wife (Gary Swanson and Olivia Birkelund) are at the curb at the airport early in the morning, looking for the person they expect to pick them up. When their ride doesn't show, they take a taxi. The cab driver kidnaps them to a desolate part of town, but before we learn more Rhyme wakes up in his apartment which is fully equipped to manage his medical care. Rhyme's medical tech Richard Thompson (Leland Orser) tells him his heart monitor is faulty.Dr. Barry Lehman (John Benjamin Hickey) arrives to talk about Rhyme's request for assisted suicide. He agrees to help Rhyme the next weekend. His nurse, Thelma (Queen Latifah), listens and watches.Amelia Donaghy (Angelina Jolie) is brooding by the window of her apartment. She's a patrol cop and her boyfriend (Bobby Cannavale) pressures her to make a commitment to their relationship, but she refuses. On the street, she responds to a radio call and finds the man from the cab buried in the rocks, with only his hand showing. One of his fingers is missing. On the nearby railroad tracks she sees a pile of sand, a note, and a bolt. She stops an oncoming train and ask Chris (Christian Veliz), the boy who reported the dead man, to buy her a disposable camera. She photographs everything including a footprint nearby.A masked man is dragging the woman from the cab through underground tunnels. She is handcuffed and gagged. He attaches the handcuffs to chain around a pipe and leaves her.Captain Howard Cheney (Michael Rooker) arrives at the crime scene and meets Detective Solomon (Mike McGlone), then is directed to Donaghy. She gives the evidence she collected and the camera to Detective Paulie Sellitto (Ed O'Neill). Cheney... My question: Who is the killer after?
Rhyme