Reptiles and amphibians ruled the world for nearly 200 million years and today there are over 14,000 varieties of them. Some are huge - among the deadliest creatures on Earth; others are tiny and number among the strangest. Where did these ancient creatures come from? How have they transformed themselves into the bizarre and beautiful forms alive today? And what is the secret of their epic success? The very latest technology enables extraordinary and previously unseen behaviour to be captured in intimate detail, overturning the myth that cold blooded life is slow, solitary and primitive and revealing these creatures to be as dramatic, social, sophisticated and passionate as warm blooded animals. This series will change the audience's perceptions forever - giving them a new, warm-hearted relationship with Life in Cold Blood.