Trail of the Pink Panther (1982)

Audacious exercise in Burke and Hare filmmaking, in which Blake Edwards attempts to construct a further vehicle for Peter Sellers literally from beyond the grave, by assembling a selection of outtakes from previous films in a flimsy new plot.
For the first half hour he  actually comes close to getting away with it, but then the clips dry up, Clouseau 'disappears', and the film becomes a ballsaching trudge, with Joanna Lumley as a journalist interviewing his old associates (including a dubbed David Niven) whose reminiscences provide forced segues into clips that everyone's already seen a hundred times. Then there's some new bits purportedly showing Clouseau as a young man. Then it just ends.