Intro: Season 1 of Harper's Island introduces the characters who travel to the Washington island for the wedding of Henry and Trish. Henry's best friend Abby is returning to the isle for the first time since a killer murdered her mother and five others years ago. As the wedding guests arrive, murders begin anew, and people are killed as the others play whodunit.
Original Air Dates: April 9, 2009 - July 2, 2009
Episode #: 1
Title: "Whap"
Summary: A mysterious killer stalks wedding guests as they arrive on Harper's Island.
Episode #: 2
Title: "Crackle"
Summary: Trish confronts an old flame when the wedding embarks on a scavenger hunt. Henry makes peace with some of the locals. Abby meets up with a friend who is haunted by John Wakefield and the island's tragic past.
Episode #: 3
Title: "Ka-blam"
Summary: Kelly's death is ruled a suicide, but Abby believes she was murdered. Meanwhile, Trish confronts her feelings about Hunter, and a sixth person dies.
Episode #: 4
Title: "Bang"
Summary: A gruesome discovery disrupts the festivities when the groomsmen take Henry fishing for his bachelor party. The bridesmaids celebrate Trish's final days as a bachelorette with a psychic who reacts strongly to Abby.
Episode #: 5
Title: "Thwack"
Summary: The guys deal with Joel's disappearance. Abby uncovers a secret obsession. Henry and Dean have a falling out. The sheriff makes a grisly discovery. Someone sabotages the rehearsal.
Episode #: 6
Title: "Sploosh"
Summary: J.D. tries to convince Abby of his innocence. Abby suspects that her father has been lying about Wakefield's death.
Episode #: 7
Title: "Thrack, Splack, Sizzle"
Summary: Through flashbacks to the massacre seven years earlier, we learn about John Wakefield's motivation. J.D. is captured. The wedding is called off.
Episode #: 8
Title: "Gurgle"
Summary: Madison is kidnapped and phones to say that if anyone leaves the island, she'll be killed. J.D. escapes. The killer strikes again and again.
Episode #: 9
Title: "Seep"
Summary: In light of the most recent deaths and Madison's disappearance, tensions reach the breaking point among the group, but they stand united once more when they find a map of the island's underground tunnels that could help locate the missing girl.
Episode #: 10
Title: "Snap"
Summary: An attempt to leave the island is thwarted by an explosion. As suspicion mounts against the sheriff, the real killer is revealed.
Episode #: 11
Title: "Splash"
Summary: The killer's identity finally emerges, but the cat-and-mouse game isn't over. When yet another friend goes missing, the survivors come face-to-face with the shocking prospect of a second murderer on the loose.
Episode #: 12
Title: "Gasp"
Summary: Wakefield is captured, but as he explains his side of the story, suspicion arises as to who his helper is.
Episode #: 13
Title: "Sigh"
Summary: When the identity of Wakefield's helper is revealed to all, the survivors must hold off the two killers until help arrives.
