Freeform already shared the first trailer for its Cloak And Dagger series today, but that’s not all the hip, teen-friendly network is up to. In a press release, Freeform also announced some other developments that should be of particular interest to its hip, teen-friendly audience. For starters, it has given a 10-episode series order to Siren, a Vampire Diaries-style drama that swaps out the undead bloodsuckers for a vengeful mermaid on a mission to murder the surface people who killed her mermaid family. Naturally, the girl meets a surface boy who treats her well, but according to a trailer that Freeform also released, Siren looks like it’s going to emphasize brutal mer-murders over any star-crossed romance.