Congress Lok Sabha MP Karti Chidambaram and his wife Srinidhi will move the Madras HC in a tax-evasion case, a day after their discharge petition was rejected by a special court, said the source. The matter relates to the alleged non-disclosure of Rs.1.35-crore received by Karti, son of former union minister P.Chidambaram, and his wife Srinidhi in cash for sale of land at Muttukadu.