Here we have another article about Gale and his role in TSC by Mehera Bonner from wetpaint.com:

"If you’ve read The Secret Circle books, you know that Charles Meade is a sleuthy creepster who likes to commit the occasional murder. “He gets to do seemingly dangerous and bad things while covering all of that by being a charming member of society and father,” Gale reveals. “He's probably wracked with guilt and some sort of underlying revenge agenda, so it's basically having the double-sided story that appeals to me.”"

Read the full article here:
Secret Circle Spoiler! Gale Harold Spills on Charles Meade’s Sinister Tendencies