Voltar by Alfredo Alcala
Warren publishing acquired the rights to reprint Voltar, in English, as an eight-part series in The Rook magazine. The first of the 8 installments appeared in The Rook issue 2 (cover date February 1979).
Luckily, the complete content of the first installment of 'Voltar' has been scanned and is available at the 'Straight Outta Surrey' website. It's well worth checking out.