The Croatian actor will romance the Oscar winning actress when she makes her return to the small screen in the Steven Spielberg executive produced drama.
Visnjic will play John Watts, the husband to Berry's Molly Watts, a female astronaut returning home after spending a year in space.
NCIS actor Michael O'Neill also joins the cast, alongside former The Practice star Camryn Manheim.
Extant’s Production Company CBS have bypassed the pilot stage of the shows production and have placed a 13 episode straight to series order on the new science fiction show.
Berry's last TV series credit was in a recurring role on US. soap opera Knots Landing in 1991.
Berry is also set to hit the big screen later this year with the majority the former X-Men cast as they star alongside the new stars of the franchise in X-Men: Days of Future Past.
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