In a new letter on his website, John Travolta thanks the cast of his new thriller The Taking Of Pelham 1 2 3 for promoting the film as he continues to mourn the loss of his 16-year-old son, Jett.

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"[Director] Tony [Scott], Denzel [Washington], Luis [Guzman], John [Turturro], James [Gandolfini] and Sony Pictures stepped up without hesitation to help promote this wonderful film, and their unselfish efforts have allowed my family the additional time to reconcile our loss," he writes.

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Travolta added that his villainous role -- which he calls "the ultimate evil -- "gave me the chance to dispense with all moral and ethical limitations, and explore just how bad this character could really be. I believe you will like the result."

Before signing off, he tells fans to set their calendars for opening day, June 12. "I promise you," Travolta writes, "you won't be disappointed."

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Travolta skipped last week's premiere, but costar Washington told Us the actor and his wife Kelly Preston "are doing as well as one can expect." "It's a tough situation," he told Us. Jett Travolta died unexpectedly after a seizure in the Bahamas while the family was vacationing in January.

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