The cast of Freeform’s ‘Siren’ includes Rena Owen as Helen, Ian Verdun as Xander McClure, Eline Powell as Ryn, Fola Evans-Akingbola as Maddie Bishop, and Alex Roe as Ben Pownall. The show returns for the second half of season 2 on June 13. The mermaid drama has already been renewed for season 3. The summer premiere synopsis reads: Ben, Maddie, and the other humans deal with the fallout from the attack on the oil rig, while the mermaids reacclimate to their ocean home. Ryn comes back to land to follow through on an agreement she made with the military, despite not knowing what their ultimate goals are. The drama continues to rise on ‘Siren.’ Plus, Ryn’s relationship with both Ben and Maddie continues to be explored. The show will air Thursdays at 8 p.m. See more photos of ‘Siren’ season 2 in our gallery now.