More than five years after Florida State University law professor Dan Markel was gunned down in the driveway of his home, two key players in what prosecutors believe was a plot hatched by the academic’s former in-laws to get him out of the picture are set to stand trial.

Jury selection is slated to begin Monday in a Tallahassee court in the case against Sigfredo Garcia—who stands accused of pulling the trigger and murdering Markel—and Katherine Magbanua, the mother of Garcia’s children and ex-girlfriend of Markel’s former brother-in-law Charlie Adelson. The defendants are being tried together on charges of first-degree murder, conspiracy and solicitation to commit murder.