At the observatory, Bart hears signals from outerspace and runs into Shirley on the case. When two officials show up, it becomes clear that the man in charge of the observatory is not who he says he is.
Where to Watch The Case of the Celestial Signal
Cast of The Case of the Celestial Signal
Brendan Fletcher
Meredith Henderson
Elizabeth Shepherd
John White
Colin Fox
Annick Obonsawin
Shelley DuvallAlice Flitt
Marie Stillin
Blair Slater
Gary HarveyDirector
Tony DiFrancoWriter
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