Warehouse 13

Warehouse 13 has been picked up for a second season.

This SyFy series, about Secret Service agents that investigate unusual artifacts, is the most-watched show in the network's 17-year history, averaging 3.7 million viewers a week and 1.4 million in the 18-49 demographic.

SyFy president Dave Howe says 13 episodes have been ordered for the second season, but that figure could increase.

"We took a look at doing 20 episodes, but for logistic and financial reasons, it didn't make sense to do that right now, but I wouldn't rule it out," said Howe.