Rian Johnson's Knives Out is proving a hit with the critics ... as iconic actor Frank Oz made a cameo appearance as Thromby family lawyer Alan Stevens.

Murder mystery Knives Out is full of twists ... fans will have been sure to notice the presence of Frank Oz as attorney Alan Stevens, who gives the Thrombey family some news about their late ...

According to filmmaker Rian Johnson: “Knives Out.” It’s impossible ... Elliot and Frank Oz as the family’s lawyer, Alan Stevens, are both testaments to the actors’ ability to develop ...