David Tennant's adopted son made his TV debut last night, proving acting talent truly runs in the family.
Ty Tennant, 17 appeared in Casualty on BBC One on Saturday playing a young patient called Aaron who suffered a seizure.
The teenager is the son of David's wife Georgia Moffett, 34, but the Doctor Who star, 48, officially adopted Ty the same year the couple had their first child.
Georgia, who has been married to the Dr Who star since 2011, was bursting with pride for her boy on Twitter .
She tweeted: "I am so proud of Ty Tennant tonight on BBC One’s Casualty .
"He was so good they didn’t feel the need to crush him to death in a lift shaft…"
Georgia's joke was referencing her own demise in the soap as Heather Whitefield, who died when she became trapped under a lift.
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Aaron was rushed to Holby City Hospital after he suffered a seizure on his birthday.
He had a broken neck and found himself in the middle of a family feud during the episode.
Ty is also appearing in upcoming biopic Tolkien playing a young Christopher Wiseman.
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The schoolboy joined adoptive dad David on the red carpet for the premiere last week.
When asked whether he'd got acting tips from his dad, Ty told the Daily Mail : "I got tips from everyone.
"I'm so young in my career and I'm still learning a lot and I'm so lucky to have these people around me who know the industry very well.
"And they're just very inspirational so that's something I can really thrive on. Just having these people who know their stuff."
David and Georgia share Olive, eight, Wilfred, five, and Doris, four.
The children come from good acting stock as not only did David play the Doctor, Georgia's father Peter Davison was the fifth incarnation.
