Few resumes are as busy as that of Yoon Se-a, a South Korean actress, better known to casting directors than to the public. 'Stranger' sits on the same long list. At 48, the filmography is already a dense one. Drama is the register she has worked in most. Film and television have both provided steady work. Among the titles, 'Snowdrop' is the one audiences are likeliest to know, with she as Pi Seung-hee.