You can watch "Pretty Little Liars" streaming on Hulu, Max (HBO Max), and Max Amazon Channel in the US. It is also available for purchase as a download on Apple TV, Fandango At Home, and Amazon Video

. Additionally, in Germany, the series can be streamed with a subscription on Amazon Prime Video, RTL+, Amazon Prime Video with Ads, or Joyn with ads, and can be bought on Apple TV, Amazon Video, MagentaTV, and maxdome Store

. Note that availability may vary by region. For example, it is not currently available on Netflix, Disney+, or Prime Video Channels in some regions

. In Canada, Hulu and HBO Max are not available, and the show can only be purchased by season on YouTube, but only up to season 5

. If you are outside the US, you may want to check local streaming services or consider purchasing episodes or seasons digitally.