Last week at the RT Book Lovers Convention in New Orleans, paranormal romance fans were treated to panels, socials and nighttime parties featuring creatures that go bump in the night. And one of the favorite monsters of the moment? Why, shapeshifters, of course! To create a memorable shifter, authors must convincingly combine human habits with the character's 'animal' side, which takes a lot of research and attention to detail. Yet despite the time that goes into crafting these hybrid characters, authors rarely stick to writing about just one animal. We went to the masters of shapeshifting, Thea Harrison, Terry Spear, Sara Humphreys and Nalini Singh — with bonus Jeaniene Frost cameo! — for the scoop.