Michelle Yeoh and Selina Lo join the cast of action thriller Boss Level Variety reported today that actresses Michelle Yeoh and Selina Lo have joined Mel Gibson and Frank Grillo in Joe Carnahan’s action thriller Boss Level. Specifics surrounding their roles have not been disclosed, but Yeoh will be in a key supporting role. Michelle Yeoh is most known for her work in the award-winning Crouching Tiger, Hidden Dragon and playing a Bond girl in Tomorrow Never Dies.