Not to take away from Medium but
1) dead zone started in 2002 (and was based on the earlier book and film) three years before medium
2) Medium is probably also indebted to shows like Profiler, and others could name a lot more I'm sure....
3) Ghost Whisperer ripped off a lot but the professor and eli were no scanlon - and, they didn't do murder story after murder story ( which i actually really liked about it
4) I have trouble seeing Supernatural as in any way being in the footsteps of medium
Not to take away from the genre but 1)The Dead Zone was about a single man still in love with the Sheriff's wife up until Medium came along, from then on they killed off the Sheriff and made his son the psychic's child which wasnot part of the original book/plot.
2) Medium was the complete opposite of Profiler - a show based also on a single mom flirting with her boss and fellow detective - because it was a character study on a marriage with three children who had the same abilities as their mother's, which wasn't the case for either the first or the second profiler, not to mention the first one's daughter was played by several different child actors, not the same kid as the children who played the role of Marie, Bridgette and Ariel.
3) Ghost Whisperer ripped off the plot, the marriage and the third party from Medium, it only added cleavage, just like later on it added a son, it's because it had not even one original story in its whole repertoire that it got unceremoniously cancelled between seasons. I get why this might have upset those fans but in no way they should be taking it out on Medium, that earned a well-deserved final season and pull off an even more deserving finale despite the original order was reduced from 22 to 13 episode.
4) Supernatural would rip off both Paradise Lost and the Holly Bible and still wouldn't be able to make for a season finale, let alone a series finale.
For these and all the reasons stated above, is that I strongly believe that anyone who actually saw crime after crime of Medium wouldn't be "so shocked" that the final mystery of this show would've been Joe's death.
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