LOS ANGELES (AP) - "Insidious 2" has had the best opening of any horror film ever released in September. It made $41 million in its first weekend. The sequel made three times as much as the original did in 2010. "The Family" debuts in second with about $14 million. "Riddick" slips to third after one week on top. "The Butler" is fourth and has now made more than $100 million. "We're the Millers" is fifth.