How many movies have Adam Sliwinski and Catherine Mallette collaborated on?

They have worked on 20 movies together! Their first movie together was Signed, Sealed, Delivered for Christmas (2014) while their highest rated movie together was Signed, Sealed, Delivered: Lost Without You (2016). They have not worked together since Ruby Herring Mysteries: Silent Witness (2019). They are most known for their tv movie films together.