'28 Years Later' actor Chi Lewis-Parry said he scared Danny Boyle into casting him as Samson the Alpha

Chi Lewis-Parry at the "28 Years Later" premiere and in an exclusive behind-the-scenes photo from the film. John Phillips/Getty Images/Chi Lewis-Parry/Sony Chi Lewis-Parry played the infected Alpha, Samson, in Danny Boyle's "28 Years Later." The actor told BI he impressed Boyle in his audition by…