"Batman's Psychic Twin!"
A chemical blast accidentally links Batman and hoodlum Jo-Jo Gagan, causing one to experience whatever physical sensation the other does--which leads gangsters to the conclusion that if they kill Jo-Jo, Batman will die as well.
"The Return of the Penguin!"
The Penguin, released from jail, is taunted by hoodlums in a poolroom to prove he is not a “has-been”. Nettled, he begins a new spate of bird-crimes in Gotham City, which causes Batman and Robin to get on his trail again.