According to all four Gospels, women were the first witnesses of the resurrection, a fact that no conspirator in the first century would have invented. Jewish courts did not even accept the testimony of female witnesses [much less Roman courts]. A deliberate cover-up would have put Peter or John or, better yet, Nicodemus in the spotlight, not built its case around reports from women. Since the Gospels were written several decades after the events, the authors had plenty of time to straighten out such an anomaly—unless, of course, they were not concocting a legend but recording the plain facts.
A conspiracy also would have tidied up the first witnesses stories. Were there two white clad figures or just one? Why did Mary Magdalene mistake Jesus for a gardener? Was she alone or with Salome and another Mary? Accounts of the discovery of the empty tomb sound breathless and fragmentary. The women were "afraid yet filled with joy," says Matthew; "trembling and bewildered," says Mark.
μετὰ φόβου καὶ χαρᾶς μεγάλης
τρόμος καὶ ἔκστασις