Rex Features
The 31-year-old Bollywood actress - who appeared as Queen Jamillia, the Queen of Naboo in Star Wars Episode II: Attack of the Clones - will play Prem (Madhav Sharma) and Nina Mandal's (Harvey Virdi) daughter, Tara.
On her arrival, Dev (Jimmi Harkishin) finds himself torn between mother and daughter.
Dharker's first scenes are due to air in mid-October.
Her other TV credits include Doctors, Cutting It, Waking The Dead and Doctor Who.
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