2017 Best Ever for Investigation Discovery - #1 for W25-54 and #2 for P25-54

Concluding its best year in network history, Investigation Discovery wrapped 2017 as the #1 network in ad-supported cable for the delivery of W25-54, #2 for P25-54 and #7 for P2+ in total day. With strong single- to double-digit increases across all demos in prime, ID climbed four ranks to become the #5 network for W25-54 in prime, #11 for P2+ and #13 for P25-54.

This was ID's best year in prime delivery for P2+ (1.089M); HH (896k); P25-54 (440k); W25-54 (296k); P18-49 (345k) and W18-49 (229k). Top performing series in 2017 included CASEY ANTHONY: AN AMERICAN MURDER MYSTERY (averaging 3.6M P2+); IS O.J. INNOCENT? THE MISSING EVIDENCE (1.9M P2+); HOMICIDE HUNTER: LT. JOE KENDA (1.9M P2+); SCOTT PETERSON: AN AMERICAN MURDER MYSTERY (1.7M P2+); SHATTERED (1.6M P2+); EVIL LIVES HERE (1.6M P2+) and VILLAGE OF THE DAMNED (1.5M P2+)

Investigation Discovery has outperformed its prior year in both prime and total day among P2+, HH, P25-54 and W25-54 for nine consecutive years - every year since its inception in 2008. January 27, 2018 marks ID's 10th anniversary.

2017 vs. 2016: Primetime Delivery (L+3 Day data)
P 2+: +10% (1.089M v. 990k)
HH: +9% (896k v. 820k)
P 25-54: +6% (440k v. 415k)
W 25-54: +7% (296k v. 276k)
P 18-49: +8% (345k v. 320k)
W 18-49: +10% (229k v. 208k)

2017 vs. 2016: Total Day Delivery (L+3 Day data)
P 2+: +8% (764k v. 706k)
HH: +8% (654k v. 605k)
P 25-54: +3% (340k v. 329k)
W 25-54: +3% (227k v. 220k)
P 18-49: +6% (273k v. 258k)
W 18-49: +7% (179k v. 167k)

Source: Nielsen via Multitrak, 12/28/15-12/31/17, Prime (M-Su 8p-11p), Total Day (M-Su 6a-6a), Live+3 Day data, � Hr Program Based data, Ad-supported cable ranks in Prime exclude networks not programming full 8p-11p, Total Day ranks exclude networks not programming standard of 51% of Total Day.