You can watch the TV series "Dexter" on several streaming platforms:

• Netflix offers streaming of "Dexter" including all seasons

• Paramount+ streams "Dexter" and also the new series "Dexter: Original Sin"

• Hulu has "Dexter" available for streaming as well

• Amazon Prime Video offers "Dexter" for streaming, but it requires a Prime membership

• FuboTV and Showtime are other options where "Dexter" can be streamed

Additionally, you can buy or rent episodes or seasons on platforms like Apple TV and Amazon Video

. For the original seasons, Paramount+ or Showtime subscriptions are recommended, or purchasing the DVD/Blu-Ray sets is another option

. In summary, the most common and convenient places to watch "Dexter" are Netflix, Paramount+, Hulu, and Amazon Prime Video, with options to buy or rent on Apple TV and Amazon Video.