Vexed S02E04 - Episode 4

Alison Clarke is murdered and Over-Done scrawled in ketchup on her wall. She was a leading contestant in 'Kitchen Maestro' a TV cookery contest with abrasive chef Robert Randell and George goes undercover to take her place. She soon finds that,aside from nerdy but affable young Marcus,the other entrants are frighteningly competitive - and then a second contestant is killed. George is revealed to be a truly excellent cook but it is Jack who uses a culinary ruse to trap the culprit. However he is exposed when he tries to claim George's superb cooking is his own to impress new girlfriend Beth.