Matt Damon has disappointed fans of the BOURNE film franchise - the fourth instalment is still years away from hitting the big screen.
The Hollywood actor announced in March (09) that he and director Paul Greengrass are developing an original script for the next movie in the popular series, which is based on the books by Robert Ludlum.
But the pair is so determined to make the next film as successful as the others - which have grossed more than $940 million (£590 million) worldwide - that they are still at the writing stage.
Damon tells Britain's Total Film magazine, "Personally, selfishly, we'd all really like to do it, but we are really serious about trying to get the story and the script right because the only thing more disappointing than not having another one of these movies is - for us and for movie fans - to make one that isn't good.
"Everyone would say, 'They should have quit after three.' And we'd feel that way too. We don't have the script yet, but hopefully we'll all be shooting in 18 months or so."