Streaming on Roku. Castle, a crime drama series starring Nathan Fillion, Stana Katic, and Susan Sullivan is available to stream now. Watch it on Prime Video, VUDU, Hulu, Vudu Movie & TV Store or Apple TV on your Roku device.Streaming on RokuStreaming on RokuCasting lets you direct, or cast, a video, movie or TV show you are watching on your mobile device to your TV using a Roku device. After the content starts playing on your Roku device, you can use your mobile device for something else, or switch it off and control playback with your Roku remote.https://support.roku.com › en-gb › articleCan I display content from my phone on my TV using a Roku® streaming . Castle, a crime drama series starring Nathan Fillion, Stana Katic, and Susan Sullivan is available to stream now. Watch it on Prime Video, VUDU, Hulu, Vudu Movie & TV Store or Apple TV on your Roku device.