I understand you wrote two endings to throw people off. What was the other ending?
PHILLIPS: While Dexter was packing to leave, he saw on the television that a child murderer had just escaped from prison. Either escaped or fallen thru the cracks. So he's thinking, "Do I join Rita on vacation or do I…" and then he looks towards the camera and he has this big decision. [source]
The actual ending wasn't much better. 24 already did it!
TOP TEN TELEVISION SEASON FINALE TWISTS OF THE DECADE
10. Said kills Adebisi
Oz / S04E08 / 08-30-00
Adebisi was Oz's Tim Riggins, its Omar Little, and he died halfway through the show's run because Adewale Akinnuoye-Agbaje wanted to be in The Mummy Returns.
Six years later, Mr. Eko died halfway through Lost's run because Adewale Akinnuoye-Agbaje did not enjoy living in Hawaii.
9. Happy Holidays! Larry and the Blacks
Curb Your Enthusiasm / SE06E10 / 11-11-07
8. Four Cylons revealed, Starbuck returns
Battlestar Galactica / S03E20 / 03-25-07
7. Jack's flashback is a flash forward
Lost / S03E23 / 05-23-07
or: How Lost got its groove back.
6. Abrupt cut to black
The Sopranos / S06E21 / 06-10-07
5. Deco "kills" Michael
Brotherhood / S01E11 / 09-24-06
Showtime renewed Brotherhood before this aired, and I wondered how the heck the show's writers would retcon the apparent death of its co-main character, because…brotherhood!
He sure looked dead.
4. The Carver preys on Christian, not Sean
Nip/Tuck / S02E16 / 10-05-04
3. Shane kills Lem
The Shield / S05E11 / 03-21-06
Would be number one if The Shield was more culturally relevant.
2. Jim kisses Pam
The Office / S02E22 / 05-11-06
In retrospect, I kinda wish Jim never kissed Pam, but I squeed when he did.
1. Jack finds his wife dead
24 / S01E24 / 05-21-02
"I just kept thinking, 'This is the best television show I have ever seen.'"