Here are the overnight ratings for 'Bring Them Back Alive' from ShowBuzz Daily
Fast Demo 2018 Apr 12.THU
The episode claimed the number 1 spot in social media activity for Thursday! 
13.18 Nielsen 
We made the Weekly Top Ten! in Nielsen Social Media ratings!
WeeklyTopTen13 18
We were up from last week's low rating. From TV Series Finale
Ratings from week to week.
Ratings change 13 18
The final ratings Same Day ratings via TV By The Numbers.
18-49 - 0.5/2
Total Viewers - 1.53