PG&E was formed in the Gold Rush, and has been a central part of California's power scene for over a century. But being big doesn't always mean being good. This week, we're doing a deep dive into PG&E - past, present, and future.

Critics blame them for starting thousands of wildfires in northern California, including the Camp Fire, which killed 86 people. Are these fires the result of simple accidents? Or is there something more sinister driving these fiery catastrophes?