In this week's RadioTimes.com Doctor Who podcast we delve into the latest leaks and rumours concerning series 13, with a new graphic novel synopsis hinting at a surprise Torchwood tie-in during the upcoming episodes.

Will Captain Jack be back? Is this a tease for a major series arc, and what is a "time window" in Doctor Who anyway? Delving into the series' past and future, we try to find out...

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