Team UNIT returned in the latest episode of Doctor Who, though fans will have noticed that one major character was conspicuous by their absence.
Mel originally appeared on Doctor Who as a companion between 1986 and 1987, returning for a brief cameo in 2022 before appearing in a recurring role in last year's episodes.
Her most recent outings revealed that she had been recruited by international military organisation UNIT and saw her battle fantastical threats alongside first the Fourteenth Doctor (David Tennant) and later the Fifteenth (Ncuti Gatwa).
Ruby attempts to contact Mel, but her call is intercepted by Kate instead, who explains that Mel is out of the country.
That's the last we hear of Mel's assignment, but it's apparently serious enough that she doesn't subsequently return to the UK when UNIT is targeted by Conrad Clark (Jonah Hauer-King), a devious con man who uses his digital platforms to amplify dangerous conspiracy theories for financial gain.
There's also no sign of either UNIT's other scientific advisor Morris Gibbons (Lenny Rush) or their latest recruit Rose Noble (Yasmin Finney) in Lucky Day – though perhaps with UNIT under investigation in the episode, that's just as well, or else Kate Stewart might have found herself in hot water over flouting child labour laws...
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Doctor Who continues next Saturday (10th May) on BBC One, with new episodes available from 8am on Saturdays on BBC iPlayer in the UK. The series is available on Disney+ outside of the UK.
Check out more of our Sci-Fi coverage or visit our TV Guide and Streaming Guide to find out what's on. For more from the biggest stars in TV, listen to The Radio Times Podcast.
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