Chandell, the musical virtuoso, visits Gotham City for a piano concert. But unknown to the public, Chandell is being blackmailed into a life of crime by his twin brother Harry, who retains most of the profits. Chandell intends to buy off Harry forever, and he knows just where to get the funds – from the Wayne family fortune. With Batman and Robin out of town, he suspects the robbery will be a piece of cake. However, Batman has been listening to Chandell’s concert remotely, and after detecting an anomalous chord, summons Robin back to Wayne Manor to investigate.
| Name | Type | Role | |
|---|---|---|---|
| Lorenzo Semple Jr. | Writer | ||
| Diane Farrell | Guest Star | ||
| Eddie Ness | Guest Star | ||
| Liberace | Guest Star | ||
| Marilyn Hanold | Guest Star | ||
| Edy Williams | Guest Star | ||
| Warren Miller | Guest Star | ||
| Sivi Aberg | Guest Star | ||
| Larry Peerce | Director |