by Trevor Kimball, August 5, 2020 (Freeform/Kailey Schwerman) The Siren TV series has been sunk by Freeform. The cable channel has cancelled the mermaid drama series so, there won’t be a fourth season. Siren stars Eline Powell, Alex Roe, Fola Evans-Akingbola, Ian Verdun and Rena Owen. The TV show is set in the small fishing