Dexter revival series has unveiled its first full-length trailer, as well as a release date for later this year.The original show, which follows serial killer Dexter Morgan (Michael C Hall), came to an end in 2013 after eight seasons, but a 10-episode reboot was confirmed last year.In the trailer Morgan is seen settling into his new life in the town of Iron Lake under a new alias – though as he increasingly fears the residents will learn about his true nature, his killer urges begin to emerge