The script for 'Thudarum' reached director Tharun Moorthy 12 years after it was written, he revealed. The director explained makers KR Sunil and M Renjith failed to find right formula for years but approached him after 'Saudi Velakka' released. "Renjith sir narrated the story and told me he [wanted]...characters and emotions like I had done in 'Saudi Vellakka'," said Moorthy.