Last night's episode of “Person of Interest” was titled "Booked Solid." The newest name from the machine was a hotel maid named Sanja Kadjevic who is in danger. As John and Harold walk down a New York City street, they go to the employee entrance to a large hotel. As they are changing in the locker room, they discuss the maid, who came into this country in 1999. As a bellhop and concierge, they will hopefully, protect her from harm. On an elevator, John runs into his old friend, Zoe Morgan.
As Harold hacked into the hotel security cameras, he spotted the hotel manager questioning Mira about their side operation, and if she opened her mouth about it. She denied it, and he was satisfied by the reply.
The head of Office of Special Counsel phones Agent Hersh, while his female assistant pours his coffee. He advises him that their rogue operative has avoided them again. He is ordered to find him and make sure nobody else does.
At the precinct, Detective Carter is talking with her love interest, Detective Cal Beecher. She tells him it is about time she introduced him to her son Taylor. As Agent Moss comes on the scene, Beecher leaves, and he offers her a position with the FBI, as Agent Donnelly's dossier has stated. She must take a polygraph that evening.
It looks as though there is a prostitution ring operating in the hotel and the hotel manager is a task master to John, who secretly hopes that he is the threat they seek. While talking to Finch, Carter mentioned the polygraph and her apprehension. Finch gave her some much-needed info prior to taking the test. As Mira was making her rounds, a man summoned her to his room as a pretty woman propositioned John. When John barged into the room where Mira was talking to the man, an international journalist, both were appalled at his arrival.
In the lobby, a man sitting around the lobby for a long time has Finch concerned, Zoe accidentally spilled wine on him forcing him to leave. He was immediately replaced by another man; John knows they are spotters. Harold questions who would send a hit squad to kill a hotel maid? John goes into the room of the journalist and finds info about Mira, who is not Serbian, but ethnic Albanian and escaped the country to protect herself after her family was executed.
Fusco came to the bar as a backup; as all three spotters are back in position. John attempts to get Mira out of the line of fire, just as one attempts to shoot her. John takes him out. But then Finch loses his connection to Harris' computer. When John and Mira go to his room, there is blood, but no sign of him. She told John how she could identify the war criminal in Kosovo and that this journalist had been asking her questions and begged her to go public with her story; however, she refused. John spotted a microphone just as Mira ran to the elevator with another man awaiting her arrival. The man had a gun to Mira's head, but Finch hacked the elevator before it reached the basement. Reese broke into the elevator from the top and saved Mira. She told John she had a disk that the killers wanted in her locker. John said he would return for it after she was safe. Meanwhile, Fusco took her to the police station for safety.
Carter is taking the lie detector test. As the questioning is ongoing, another agent interrupts the questioning. After that, he starts asking her about her relationship with Cal Beecher, and if she was aware of any internal affairs investigations against him? She is surprised and subsequently told they rescinded their offer at the FBI. Demanding a reason, she is told that she should choose her friends more wisely.
As Mira sits in the office a man comes in who reported he was mugged; he spots Mira and watches her through the window of the office.
When John goes to Mira's locker, as the hotel manager gives him more grief for being in the woman's locker room; he finally gets to punch him in the face. As he is leaving, Agent Hersh holds a gun to his head, demanding the disk. He demands to know who John works for. As they go at it, he holds John's head over the fire on the kitchen stove. As John gets away, he stabs him in the side and tells him that he has twenty minutes to get to the hospital before he bleeds to death, and wonders if his employer would show him that much mercy. Had John stabbed him deeper, he would have been dead.
When Cal asks her about their date with Taylor, she tells him that she needs more time. The mugging victim continues to watch Mira as Carter turns away from her desk and attempts to choke her to death. Fusco hears her cry and kills him dead.
The news on television above the hotel bar shows the international war criminal headed for trial in The Hague as Zoe meets John and Harold for a drink. She is grateful for the work to keep the names of important clients of the call girl ring out of the news. John tells Zoe that to keep the hotel free from scandal, Harold bought the place. Mira then shows up in her new uniform to go over the event calendar with Harold leaving John and Zoe alone at the bar. He offers her a job there in security, but she chooses to freelance like him. He will be staying for one more night and flashes the penthouse key at her as they make eyes at each other.
The phone rings from the Office of Special Counsel, with Hersh on the line from the hospital. He is summoned into the office, takes out his intravenous and leaves the hospital. His secretary brings in his tuxedo for the state dinner that evening, and a present for his wife for their anniversary that he forgot. Miss May has only worked for him for two months, and she knows him better than he knows himself. The camera pans to her face; it is Kara Stanton; who should soon be seen causing more trouble on "Person of Interest."