Home TV The Investigators (US) 2009 United States NR 9 Seasons • 218 Episodes The Investigators (US) - The investigators (us) season 9 Seasons The investigators (us) season 1 The investigators (us) season 2 The investigators (us) season 3 The investigators (us) season 4 The investigators (us) season 5 The investigators (us) season 6 The investigators (us) season 7 The investigators (us) season 8 The investigators (us) season 9 01