What are the clues leading up to how Eddie Preston's friend was the Fairview Strangler in season 6 of desperate housewives This is for a hard core DH fan not someone basing it off of someonesreply?

In Season 6 of "Desperate Housewives," clues suggesting that Eddie Preston's friend is the Fairview Strangler include the mysterious behavior and sudden disappearances of various characters, coupled with Eddie's increasingly erratic actions. The revelation is hinted at through subtle dialogue and the way his friend seems to know too much about the crimes without any logical explanation. Additionally, the show's signature use of red herrings and misdirection builds suspense, leading viewers to question the true identity of the Strangler until the final reveal.