Vampire's Restless Spirits are considered Banshees - Build V2.0.6f2
Windows 7 64 bits
CPU: Intel i3-4170 3.70GHz 2 Cores, 4 Logical Processors
GPU: NVIDIA GeForce GTX 970
The narrator announces that your dungeon (your defenses) are being attacked by banshees, but they are in fact being attacked by the Restless Spirits that the Vampire summons. Crucible/Lamash Restless Spirits (big heads) do not trigger this reaction so far.