Vakoun Bayo scored twice as Watford came from behind to record a thumping win at Preston in the Championship.
The Hornets made it three victories in their last five after Will Keane had touched in the opening goal for the hosts in the first half.
Bayo headed in the equaliser just before the break against a Lilywhites side that has won just one of their past seven home games.
Watford opened up in the second half as Matheus Martins, Edo Kayembe, Bayo again and Ismael Kone all found the net.
Preston went into the game with renewed hopes of climbing back into the top six having won four points from away games at Norwich and Huddersfield.