How many movies have Arnon Chunprasert and Picha Supong collaborated on?

They have worked on 4 movies together! Their first movie together was The Intruder (2010) while their highest rated movie together was Make Me Shudder (2013). They have not worked together since Make Me Shudder 2: Shudder Me Mae Nak (2014). They are most known for their horror films together.