As a consequence, Pettigrew was let go - he transformed himself back into a rat to quickly scurry off.The film is driven by Mankiewicz"" witty, cynical and bitchy screenplay - through the character of Addison DeWitt, Mankiewicz represented his point of view and opinions about show business.It""s scary, ""cause nobody tells me how to do anything ""cause I""m new, and nobody cares about the new guys.Ripley discovered, from Dr.Gediman who was encased there in the nest, that the Queen had acquired a "human reproductive system" from her, meaning that she could give birth from a womb rather than from eggs or hosts.