S1, E3: It’s Alice’s birthday and everybody’s invited, including Martha. The only problem is that Nelson (Martha’s cat nemesis) will be there too. When somebody—or some animal— ruins the birthday cake, Alice’s brother Ronald thinks Martha’s responsible./Martha, Helen, and T.D. uncover a plot to rob the jewelry store, or so they think until their two suspects turn out to be police detectives on a stakeout. Now that everybody has gone home in disgrace, how will Martha catch the real criminals?