20th Century Fox has released the first trailer for Knight and Day, a film directed by James Mangold and starring Cameron Diaz and Tom Cruise. Diaz plays a woman who is reluctantly linked to Cruise's "man of mystery" as they become fugitives in this globetrotting action-comedy filled with shifting alliances and unexpected betrayals. The film used to be called Wichita and before that Trouble Man, but Knight and Day is almost certainly final now that it's on a trailer.

The footage is not too different from that of the Entertainment Tonight spot we reported about yesterday, but more coherent due to the lack of ET interruption. I do like the framing device of Diaz explaining the craziness of her predicament to Buffy the Vampire Slayer alum Marc Blucas; I'm sure the trailer could have been much more generic. I still hate the title, but I might like it better if Cruise and Diaz's character names turn out to be Knight and Day, respectively (IMDB suggests Milner and June, but one can dream). And boy is it nice to see the wacky but charming side of Cruise, while the manic energy of Diaz seems to be a good match. This could just be a fun romp of a movie when it hits theatres this summer.

Hit the jump to check out the trailer.  Knight and Day hits theaters on July 2, 2010.