If you thought Amazon was done getting cozy with CBS, think again. The online retailer today announced yet another streaming deal with the TV network, which will give it exclusive access to three new summer series through 2018. What this means is you'll be able to watch certain CBS episodes on Prime Instant Video four days after they're first aired, as has been the case with Under the Dome and Extant -- two of the channel's most popular shows. This new licensing partnership includes episodes from CBS' upcoming BrainDead a comic thriller about brain-eating aliens in Washington, DC, plus two more shows that have yet to be disclosed.