A wealthy Florida family. A pair of hit men. A law professor gunned down in his home .

The plot to murder Daniel Markel more than a decade ago hinged on a bitter custody dispute and took years to unravel. Earlier this month, a grandmother who’d once worked as a bookkeeper for her family’s dental practice became the fifth defendant sent to prison for their role in the sprawling conspiracy.

Here’s a look at the web of defendants, the man they were convicted of killing and the woman at the center of the plot, who has never been charged with a crime.

For more on the murder-for-hire plot, tune in to Deadly Mischief on “Dateline” at 9 ET/8 CT tonight.

DATELINE FRIDAY SNEAK PEEK: Deadly Mischief

01:54

Florida legal scholar gunned down at home

Daniel Markel

A Harvard graduate and pro

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