The Caper of the Golden Bulls, also known as Carnival of Thieves, is a 1967 American action comedy film directed by Russell Rouse and starring Stephen Boyd, Yvette Mimieux and Giovanna Ralli.

[1] During a bombing mission to Germany, wartime pilot Peter Churchman (Boyd) inadvertently destroys a French cathedral.

Life is idyllic until one day Angela Tresler (Ralli), an acquaintance from the war, turns up threatening to expose Churchman's illegal activity unless he and his crew pull off a daring robbery for her in Pamplona.

During the fiesta, Churchman's men carry concealed explosives and tools during the famed Running of the Bulls, veering off into an alley during the event.

Churchman has broken into a bank and, using the dynamite, he blows open a safe, timing the explosion with a cannon's shot that is a traditional rite during the festival.