Square One (UTNS audio story)

 was the second story in the UNIT: Silenced audio anthology.

Publisher's summary
It's business as usual at UNIT, and thankfully, Kate Stewart has no immediate threats to concern her. Or so she believes.

But when Sam Bishop returns from leave, he notices things aren't quite as they seem. Soon he and Osgood are on the trail of an elusive enemy.

Meanwhile, Kenneth LeBlanc and his controversial political movement gather momentum, and one UNIT team member isn't quite themselves...