ITV announced that it had renewed the Trevor Eve drama for a second series in May.
Eve and his co-stars Helen Baxendale, Natasha Little and Amara Karan will all be returning for the new episodes, and ITV has now announced the guest stars who are also joining the show.
Small previously played Trudi in Mistresses and her other credits include Downton Abbey, The Inspector Lynley Mysteries and Sunburn. Meanwhile, Mittal is best known for his role in the movie Slumdog Millionaire.
Other stars appearing in the new series of Kidnap & Ransom include The Shadow Line and Shameless actor Sean Gilder, Five Daughters' Chris Fairbank, Cranford actress Kimberley Nixon and Owen Teale, who recently starred as Alliser Thorne in Game of Thrones.
The new series of Kidnap & Ransom will see Eve's character Dominic King attempting to rescue a British Asian family who have been kidnapped in Kashmir.
Filming for the three episodes is expected to begin in South Africa later this month.
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