Varalaxmi Sarathkumar’s directorial debut “S Saraswathi,” released in theatres on March 6, flopped despite a strong cast including Prakash Raj and Priyamani. After its April 3 Amazon Prime release, it now trends No. 2 in India. The suspenseful, emotional story of a mother protecting her child resonates strongly with OTT audiences, marking a digital turnaround.