Doc Martin (2004)

S02E07 Out Of The Woods

PC Mark Mylow tries to convince Dr. Ellingham to be his best man, but ultimately, Al Large steps up for the role. Their stag weekend, intended as a camping adventure, takes a turn for the worse when Mark is bitten by an adder and has a severe allergic reaction. Meanwhile, Dr. Ellingham faces a surge of weever fish stings affecting local teenage boys who are participating in a reckless dare game.