Definition: In this task, you will be presented with a passage and have to answer a question based on your understanding of the events inferred from the passage. Try to find the best answer that is most likely to fill in "_". Note that the URLs in the text have been replaced with [Link].
Input: The probe into the shooting of a British millionaire allegedly killed by his ex took a bizarre twist last night after it emerged gunshot residue was found on his new girlfriend. Maria Korotaeva, 22, told police she was outside boyfriend Andy Bush's holiday home when he was gunned down moments before former lover Mayka Kukucova emerged with the keys to his £60,000 Hummer and sped off. The pretty Russian said she had left gold dealer Andy to talk with his ex inside his Costa del Sol villa after they discovered her holed up in the property when they arrived for a romantic weekend getaway in April 2014.Bristol-born millionaire Andy Bush, 48, shot dead at his Costa del Sol villaSlovakian model ex-girlfriend, Mayka Kukucova, 25, accused of homicideBut gunshot residue also found on his new girlfriend Maria Korotaeva, 22The discovery throws confusion over the previously 'open and shut' case 
 Question:I do fear _'s defence team will try to use it to their advantage.

Mayka Kukucova