Alex Casey talks to James Ashcroft about making his new rest home chiller The Rule of Jenny Pen, and finding an early fan in Stephen King. James Ashcroft was browsing the horror section of a Hollywood bookshop when he got the email from Stephen King. He’d sent the godfather of modern horror a screener of his new film a while ago, and was not anticipating a reply – let alone a glowing review – to arrive in his inbox. As he was reading the email …