Jessica Fletcher is in her New York apartment and I wonder what her rent is and takes an interest in young Neil Patrick Harris who works as a delivery boy for the local grocer, is on the high school swim team with his father as coach, and has ambitions to be a writer. He's also got stewardess Liz Vassey who has an apartment in Jessica's building.
Vassey has a fine additional sideline doing a little diamond smuggling. And she has a few confederates on this side of the pond. When she's suspected of holding out, she's killed and Harris happens to come upon the deed freshly done.
Now there are a whole lot of nasty people looking for him as are the cops in this case Detective Laurence Luckinbill. Angela Lansbury's challenge is to sort it out and figure out who are the bad guys as another of Vassey's confederates is killed with the body in the high school pool.
Was Neil Patrick Harris ever that innocent?