Something was lurking in the Hub.
It lurked in the shadows under the stairs, barely visible but Ianto knew it was there.
Later, he half saw it lurking behind a kitchen cupboard, almost but not quite hidden.
Jack spotted it lurking beneath his office shelves. Unable to concentrate on his paperwork, he went to bother Ianto in the archives.
It lurked under Tosh’s desk and startled Gwen into dropping the file she was reading.
And when they were eating lunch, there it was lurking under the sofa.
“Why’s Dizzy doing that?” asked Jack.
“It’s hoping for cookie crumbs.”