What happens when you introduce a species of butterfly to a new island, and not one, but two new wasps also show up? A parasitic wasp version of nesting dolls! For our Halloween episode, we're talking about some butterfly body snatchers who also have body snatchers; a butterfly's parasitic wasp also has a parasitic wasp! Tune in to learn how one caterpillar can have two hidden parasitoids at once, just how tiny a wasp can be, and who the Glanville Fritillary Butterfly was named after!