Donna and the Tenth Doctor (Series Four photo shoot)
Below is an excerpt from Benjamin Cook’s interview with Catherine from DWM #399
Later that day, in the breaks between scenes, Catherine, David Tennant, and various space-suited actors sit around a small table in the green room, playing the card game Switch, while River Song […] tackles the Daily Telegraph crossword. (“A large barrel? Three letters?” she wonders out loud. “KEG!” replies everyone within earshot.) Meanwhile, Catherine plays her Ace of Hearts, prompting David to exclaim, “Now, why would you want to do that?”
"Because I’m going to win," she whoops. "Get in! One card left!"
"is that so?" David laughs. "Just sit still, missy. Sit still"
Afterwards, David sets the record straight: “Catherine gets too competitive,” he smiles, cheekily. “It blinds her - blinds her to the tactics. She gets overexcited. She needs to be a bit more cold-blooded. She needs to step back. She needs to breathe. She wasn’t winning. She was fighting a losing battle.”
"Was David claiming that he was the best?" chips in Catherine, surveying her co-star with an impish eye. "Well, he wasn’t the best. He’s deluded. I was the head of the leaderboard by a mile." The score sheet on the wall indicates that she’s beating David 13 games to ten.
"Can we step you back on set, please?" requests Dan Mumford, the First Assistant Director.
Catherine gasps. “But I’m about to win!”
"Sorry, you’re needed on set."
She tries another tack: “Um… which set?” she asks, innocently.