INVESTIGATION DISCOVERY CLINCHES ITS BEST QUARTER AND MARCH EVER IN PRIME AND TOTAL DAY L+3 DELIVERY AMONG KEY DEMOS

-- ID Maintains Position as Top Five Network for Women, Closing 1Q as the #3 Ranking Network Among W25-54 in Total Day --

--ID's Popular Crime News Blog, Crime Feed, Continues to Dominate as Top Crime News Blog, Growing by More than 800% in Unique Page Views and Unique Visitors from its Launch in Early 2014 --

(Silver Spring, Md.) -'The Jinx' continues to garner headlines. Serial' podcast continues to spawn debate about the justice system. Through it all, Investigation Discovery (ID) continues to dominate ad-supported cable as the only 24/7 television network for mystery and suspense, celebrating its best quarter and March ever in both Prime and Total Day on L+3 delivery among key demos*, including:

· 1Q Prime among P2+ (928k), P18-49 (337k), and M25-54 (153k);

· 1Q Total Day among P2+ (722k) and M25-54 (123k);

· March 2015 Prime among P2+ (885k), HH (725k), P25-54 (398k), P18-49 (313k) W25-54 (254k), W18-49 (204k) and M25-54 (143k);

· March 2015 Total Day among P2+ (713k), HH (602k), P25-54 (341k), P18-49 (265k) and M25-54 (123k).

ID continues to keep its stronghold on its core W25-54 demo, closing out 1Q 2015 and March 2015 as the #3 network in all of ad-supported cable for Total Day. In addition, the network is also a Top 15 network for all of ad-supported cable in Prime among W25-54 for the both 1Q 2015 (#15) and March 2015 (#12).** With the close of 1Q 2015, ID has demonstrated 25 consecutive quarters of year-over-year Prime delivery gains on Live+3 Day viewing among P2+.

The all-new ID series, See No Evil, took the network to new heights in 1Q 2015. The series debut on 2/17/15 at 10p drove ID's best night ever for Prime on L+3 delivery among P25-54 (795k), P18-49 (662k), W25-54 (513k), W18-49 (443k), M25-54 (282k), and M18-49 (219k). The premiere also broke ID's record for best Prime telecast ever for delivery among P2+, P25-54, W25-54, M25-54, P18-49, W18-49 and M18-49. For L+3 performance, the record breaking series debut delivered 1.81 million P2+ viewers.

The premiere of On the Case with Paula Zahn on Sun 3/8/15 at 10p was the series' best premiere ever for Prime on L+3 delivery among P25-54 (717k), P18-49 (573k), M25-54 (303k), and M18-49 (254k). The episode became ID's top 4 telecast of all time for Prime delivery among M25-54 and M18-49.

On the digital front, ID's popular crime news blog, Crime Feed also celebrated a big end to 1Q 2015, experiencing 889% growth for Unique Page Views from 1Q 2014 (1,068,614) to 1Q 2015 (10,557,456), and an 884% growth for Unique Visitors from 1Q 2014 (534,432) to 1Q 2015 (5,263,935). Since its launch in October 2013, Crime Feed's audience has grown a staggering 4600+%.

About Investigation Discovery

Investigation Discovery (ID) is the leading mystery-and-suspense network on television and America's favorite "guilty pleasure." From harrowing crimes and salacious scandals to the in-depth investigations and heart-breaking mysteries that result, ID challenges our everyday understanding of culture, society and the human condition. One of our nation's fastest growing cable networks, ID delivers the highest-quality programming to more than 86 million U.S. households and is available in both high definition (HD) and standard definition (SD). For more information, please visit InvestigationDiscovery.com, facebook.com/InvestigationDiscovery, or twitter.com/DiscoveryID. Investigation Discovery is part of Discovery Communications (Nasdaq: DISCA, DISCB, DISCK), the world's #1 pay-TV programmer reaching nearly 3 billion cumulative subscribers in 220 countries and territories.

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*Source: Nielsen, NHI Calendar, 1/27/08-3/29/15, L+3 Day data, Prime (M-Su 8p-11p), Time Period Averages.

**Source: Nielsen, NHI Calendar, 12/29/14-3/29/15, Prime M-Su 8p-11p, Total Day M-Su 6a-6a, L+3 Day data, P/W25-54 delivery, Time Period Based Averages, Ad-supported cable, Prime ranks excluding any networks that did not air in the entire daypart or time period, Total Day ranks exclude ADSM and NAN. .