Substitution Cipher Puzzle

This memorable line, "I see dead people," comes from the chilling 1999 supernatural (Review) thriller, "The Sixth Sense." It is uttered by the young protagonist, Cole Sear, who possesses the ability to communicate with ghosts. The phrase quickly became a pop culture phenomenon, famously delivered in a hushed, intense whisper, defining the film's central mystery and atmosphere.

The film was written and directed by M. Night Shyamalan, whose early career was marked by his signature twist endings, solidifying his reputation as a master of suspense. Your recent challenge utilized a substitution cipher, a fundamental method in cryptography where each letter of the original text is consistently replaced by a different letter or symbol. This technique dates back centuries, with some of the earliest known examples found in ancient Roman ciphers like the Caesar cipher, used by Julius Caesar himself for secure communication.