Betty Lou is attracted to the villain's plane
by a fake letter from Tommy, and captured. As she
struggles too much, she is knockedon the head uncnscious. Later on, she is (incompetently)
diagnosed as dead. and almost thrown out.
Thankfully, she awakens in time.
Source: DCM
Catwoman,searching for her origins and the connection she has to the Falcone family,visit the morgue to inspects the Carmine Falcone's body, but an unknown figure knocks her out.
Catwoman wakes up to find herself trapped in a coffin, about to be cremated. Batman rescues her just in time.