All looks rosy in leafy London W4. Peter is about to retire and sell his half of the accountancy business to his partner. They’ll be loaded. Laura has just packed their youngest off to university and the world is their oyster. Will they go on a cruise? Hike in the Himalayas? Take up golf? All that remains is for the documents to be signed. They’re off for a celebratory dinner when Laura drops a bombshell……