Author Dennis Lehane will be at Brookline High School to talk about how he went from a series of odd jobs in his native Dorchester to writing several best-selling novels. The free event, being sponsored by the Public Library of Brookline, is slated for 7 p.m. Oct. 7 in the high school’s auditorium. Lehane, whose mystery novels include “Mystic River” and “Shutter Island,’’ will discuss his struggles and triumphs as a young writer who spent years waiting tables, parking cars and loading freight before his career as an author took off. Lehane, who now lives in Brookline, will also discuss his latest novel, “Live by Night,’’ and his experiences writing for a hit HBO series, “The Wire,” and will share insights on screenwriting. Doors will open for the event at 6:30 p.m. Full story for BostonGlobe.com subscribers.