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Nancy Drew Wiki

The Mark Of The Poisoner's Pearl is the tenth episode Season 1 of CW's television series Nancy Drew, and it is the mid-season premiere of season one. It aired on January 15, 2020.


Official synopsis:

JUSTICE - After discovering a connection between the poison that killed Tiffany Hudson and a Horseshoe Bay cold case, Nancy (Kennedy McMann) and the Drew Crew risk their lives to bring a serial killer to justice.

Plot summary

Act 1: Carson has been in jail for two weeks, and Nancy prepares for her subpoena with her father's lawyer, who mentions that Nancy has been avoiding her father's calls from prison. At The Claw, the crew celebrate Ace's return to work. Nancy gets a call from Dr. Sanders with the name of the poison that killed Tiffany Hudson. Owen visits The Claw and confirms to Bess that they're first cousins, and Bess suggests he and Nick work together regarding taking down the Hudsons. As Nancy is does a search about the poison, Ace asks why there's a picture of his father on her phone.

Act 2: Ace introduces Nancy to his father Captain Thom, and Nancy asks him about his 2003 case of an apparent suicide by the same rare poison that killed Tiffany. He reveals that he's been receiving emails in cipher, and Nancy offers to try cracking them. Ryan Hudson visits George at The Claw, and Bess suggests that Nick and Owen work on him. Nancy cracks the cipher and puts out a challenge to the city's serial poisoner to come for her to prove their skill. Owen makes an offer to Ryan, and asks for his help proving that the Bonny Scot ship was intentionally sunk by Ryan's father. Owen later visits Nancy with takeout to check on her, when Nancy gets a message from the killer.

Act 3: Nancy finds Ace working with George and Bess, and they find the connection between the previous victims all being Hawthorne High School. After seeing his mother, Ryan calls Owen and tells him to stop looking into the sinking of the Bonny Scot, but he doesn't tell him that he's found artifacts proving the theory that the sinking was intentional.

Act 4: Nancy and the crew search through the closed Hawthorne High School. Nancy finds Claire, but the doors all automatically close, separating everyone. A gas starts leaking into the room with Nancy and Claire, and Claire tells her it's poisonous.

Act 5: Nick and George search for where the poison is coming from. Ace video-calls his father for advice for how to break through the door. Nancy covers the vents to slow the poison, and she and Claire start talking to help Claire stay calm. George finds a video of Pam's death and sees that their alleged victim Claire is the killer, and since she's locked in with Nancy then George and Nick realize that there must be an antidote.

Act 6: Nancy figures out Claire is the murderer and accuses her of killing Tiffany, but Claire denies it because it isn't her style. Nancy collapses, stealthily taking Claire's pearl ring as she does. Ace gets the doors to unlock, and Nick and George get Nancy out of there. George realizes that the pearls in the ring are the antidote and they give one to Nancy. On the spirit plane, Nancy encounters Lucy and wakes up. Ace finds Claire and turns her over to the police. That night at her home, the crew takes care of Nancy. George asks about Lucy, and Nancy wonders if Lucy is also back from where Simon sent her. Nancy accepts a call from her father in prison.

Cast and characters






He shouldn't miss me. He should hate me. I put him there.
— Nancy----
Nancy: "Why do you guys always show up? When I very explicitly ask you not? I mean, somebody could have gotten seriously hurt."
Ace: "Because that's what friends do. They show up. Except for Bess."
Bess: "Hey! I was dealing with a delicate family situation."
Ace: "Nancy, I might still be in a coma if it weren't for you."
George: "When I got possessed by Tiffany, you chose me over questioning a ghost about her own murder. You saved my life."
Bess: "And you let me live with you when I had nowhere else to go."
Nick: "You helped me find what Tiffany left for me and you didn't turn me into the cops, even when you had reason to."


Nancy: "My friends will come and get us out of here."
Claire: "You told them to leave."
Nancy: "Yup, but they don't ever listen to me."


Every time I dig into a case I hurt everybody around me.
— Nancy----
The hero of Horseshoe Bay. The hero of Horseshoe Bay's friends.
— Ace----
I failed my driver's test the first time I took it. My dad drove me home, so I was really surprised when I looked up and we were in the parking lot of my favorite ice cream shop, which was closed. But my dad had called the owner and he came out with a pint of my favorite flavor. And my dad told me that it was okay to fail.
— Nancy----
Ace: "Did you miss me?"
George: "I absolutely did not."






Nancy Drew episodes (2019 TV series)

Season 1

1. Pilot
(Oct 9, 2019)

2. The Secret of the Old Morgue
(Oct 16, 2019)

3. The Curse of the Dark Storm
(Oct 23, 2019)

4. The Haunted Ring
(Oct 30, 2019)

5. The Case of the Wayward Spirit
(Nov 06, 2019)

6. The Mystery of Blackwood Lodge
(Nov 13, 2019)

7. The Tale of the Fallen Sea Queen
(Nov 20, 2019)

8. The Path of Shadows
(Dec 4, 2019)

9. The Hidden Staircase
(Dec 11, 2019)

10. The Mark Of The Poisoner's Pearl
(Jan 15, 2020)

11. The Phantom of Bonny Scot
(Jan 22, 2020)

12. The Lady of Larkspur Lane
(Jan 29, 2020)

13. The Whisper Box
(Feb 5, 2020)

14. The Sign of the Uninvited Guest
(Feb 26, 2020)

15. The Terror of Horseshoe Bay
(Mar 4, 2020)

16. The Haunting of Nancy Drew
(Mar 11, 2020)

17. The Girl In The Locket
(Apr 8, 2020)

18. The Clue in the Captain's Painting (season finale)
(Apr 15, 2020)

Season 2

1. The Search for the Midnight Wraith
(Jan 20, 2021)

2. The Reunion of Lost Souls
(Jan 27, 2021)

3. The Secret of Solitary Scribe
(Feb 3, 2021)

4. The Fate of the Buried Treasure
(Feb 10, 2021)

5. The Drowned Woman
(Feb 17, 2021)

6. The Riddle of the Broken Doll
(Feb 24, 2021)

7. The Legend of the Murder Hotel
(Mar 10, 2021)

8. The Quest for the Spider Sapphire
(Mar 17, 2021)

9. The Bargain of the Blood Shroud
(Mar 24, 2021)

10. The Spell of the Burning Bride
(Mar 31, 2021)

11. The Scourge of the Forgotten Rune
(Apr 7, 2021)

12. The Trail of the Missing Witness
(Apr 14, 2021)

13. The Beacon of Moonstone Island
(Apr 28, 2021)

14. The Siege of the Unseen Specter
(May 5, 2021)

15. The Celestial Visitor
(May 12, 2021)

16. The Purloined Keys
(May 19, 2021)

17. The Judgement of the Perilous Captive
(May 26, 2021)

18. The Echo of Lost Tears (season finale)
(June 2, 2021)

External links