Hot on the heels of ``A Shot at Love With Tila Tequila'' comes another epic battle of the sexes with a twist. ``A Double Shot'' spotlights the bisexual ''Ikki Twins,'' Rikki and Vikki, who each look for Mr. or Mrs. Right among 12 straight men and 12 lesbians. Romantic challenges pare down the competition, with each episode culminating in an elimination ceremony until two contestants remain. Then, without consulting with each other, Rikki and Vikki choose who they want to be with, but if they both pick the same person, that person will have to choose between the twins.