• Nikki was John Wakefield's daughter.

• Booth is not dead. (Disproven by "assassin" Karim Zreik.)
• Booth was the son of John Wakefield.
• Booth was a member of a frat-based tontine.
• Booth's phone will be found in a later episode.

• Danny Brooks and Christopher Sullivan will find Joel Booth and the money. (They found the money, not the body.)

• Danny and Sully saw Malcolm Ross talking to Booth's grave. (Malcolm took Booth's final resting place to the grave with him.)
• Danny was the son of John Wakefield.
• Danny was a member of a frat-based tontine.
• Danny and Sully will tell of Booth's disappearance.

• Chloe Carter was Sailing with Cal Vandeusen during the wedding rehearsal.

• Lucy is not dead. (Disproven by "assassin" Karim Zreik.)
• Gigi led Lucy to the pitfall on purpose. (Highly unlikely, for obvious reasons.)

• Henry Dunn is the son of John Wakefield.. (he calls Wakefield "Dad" in Sigh.)
• Henry is Abby Mills's half brother.
• Henry is the killer out of the 25 suspects.
• The multimedia company that Henry owns is Hometown Press, Inc. (Confirmed in chat with Jason.)
• Henry killed his parents when he found out that he's John Wakefield's son. (Definitely killed his father; semi-confirmed by Karim Zreik and Christopher Gorham.)

• Henry wants the Wellington fortune. (In "Sigh", he states that the wedding was the only way he could think of to get Abby back to the island.)
• Henry is a member of a frat-based tontine.
• Henry poisoned the salmon in the hatchery as practice for poisoning his parents. (Has nothing to do with murders.)

• J.D. dislikes Uncle Marty. (Stated in "Sploosh".)
• J.D. is being set up by the killer to look guilty. (He was sent to jail at the time of Malcom Ross' death)
• J.D. put the dead raccoon in the church. (confirmed by karim)

• His surprise for Henry Dunn is that he is going to die. (It was a roman candle in the unity candle.)
• J.D. has terminal cancer, and has to take all his meds to be able to function. (His medication is for depression, among other things.)
• J.D. wrote the word PSYCHO in deer blood on Shane Pierce's windshield. (This was done by either Henry or Wakefield.)
• J.D. put the deer head in Henry's tub to set up Shane. (Same as above.)

• Marty Dunn was a cop or investigator. (Disproven by Karim Zreik.)
• Marty brought money to the island to pay off Richard Allen. (In "Sigh", it is revealed that he brought the money to invest in Malcolm's brewery.)
• Marty was blackmailing the killer.
• Marty was in prison at the same time as John Wakefield.
• Marty was hired to murder Ben Wellington.
• Marty was a drug dealer.

• Hunter is related to John Wakefield.

• Maggie was John Wakefield's lover.
• Maggie was being forced to aid the killer.
• Maggie had a child with Wakefield, who is the killer.

• Jimmy is Cheshire Cat. (Cheshire Cat is Andrew Cullen.)
• Jimmy is the illegitimate child of John Wakefield.

• Abby is still in love with Jimmy Mance.
• Abby has a half-sibling, who is the child of John Wakefield.

• Abby is in love with Henry Dunn. (In Sigh, she yells at Henry that she doesn't want him and ends up killing him protecting Jimmy.)
• Abby committed the murders seven years ago and Charlie Mills masked her, blaming John Wakefield. (A flashback shows that Abby was hiding behind the bushes witnessing the death of Randall Martin.)
• Although Abby did not commit the murders seven years ago, her father Charlie Mills thinks she did and that he is protecting her by blaming John Wakefield.
• Abby Mills is an illegitimate child of John Wakefield. (Refuted by the Sheriff in "Snap".)

• Charlie Mills, with Ike Campbell's help, spread the story that Wakefield's body was found to prevent a panic on the island. (Motive is unknown, as well as whether Dr. Campbell knew; otherwise true.)
• Charlie knows Wakefield is still alive.

• Charlie killed John Wakefield as a cover for the real murderers.(Wakefield is not dead.)
• Charlie was the murderer, not Wakefield.
• Charlie assisted Wakefield with the murders.

• Shane dislikes Abby Mills. (Apparent from the beginning, stated in "Seep".)

• Shane put the deer head in Henry Dunn's bathtub to anger J.D. Dunn. (This seems rather unlikely, as J.D. never found out about the deer head.)
• Shane Pierce is related to John Wakefield.

• Malcolm fell into the pit trap during the scavenger hunt and Beth helped him out. (This was shown in a deleted scene on the DVD)

Kelly Seaver

Christopher Sullivan

• Christopher Sullivan fell in love with Nikki Bolton.

Cal Vandeusen

Katherine Wellington

• Katherine Wellington is or was a cop/investigator.

Thomas Wellington

Trish Wellington

Other Characters

John Wakefield

• Wakefield played the "Ave Maria" through Abby's phone (twice).

Ben Wellington

• Ben Wellington is seen at the fraternity in Cody's videos.

Ashley

Quiet Guy

• Quiet Guy's identity is unknown.

Peck

Wilson

• Wilson's whereabouts are unknown.