It’s Monday morning, and what better news could there be than a free movie or three? (Well, OK, I can think of a few better things, but hey, we take what we can get.) The Seattle International Film Festival has teamed up with HBO Documentaries to present a trio of films not yet seen on television, all of which sound potentially fascinating. All screen at SIFF Cinema at the Uptown, in Queen Anne. “Crisis Hotline: Veterans Press 1” examines the suicide epidemic among American war veterans; it screens Wednesday at 7 p.m., with director Ellen Goosenberg attending. “Toxic Hot Seat,” with directors James Redford and Kirby Walker present, screens Wednesday the 13th at 7 p.m.; it follows a decades-long grassroots campaign to uncover the truth about chemical flame retardants. And “Six By Sondheim” looks at the career of the legendary American musical theater composer/lyricist Stephen Sondheim, focusing on the making of six trademark songs (“Something’s Coming,” “Opening Doors,” “Send in the Clowns,” “I’m Still Here,” “Being Alive” and “Sunday” — bonus points if you can hum at least four of them). It screens Wednesday the 20th, at 7 p.m., with producer Liz Stanton and editor Miky Wolf attending. All films are free; for more information or to RSVP, click here.