Scientists believe that black holes can slow down the progress of time. A similar effect can be felt by viewers of this damp squib of a farce as it grinds on from one lame set-up to the next. This sort of sub-Alan Ayckbourn trawl might work on stage but never on the big screen, where all the deficiencies of the form are thrown into sharp relief. From Oz downwards, the credits are full of familiar names foolishly squandering the goodwill their past works have generated.