"How I Met Your Mother" 8 p.m. CBS — Lily receives a troubling text. Sherri Shepherd guest stars.

"The Voice" 8 p.m. NBC — The knockout round — where coaches pit two of their team members against one another — begins.

"Monday Night Football" 8 p.m. ESPN — Seattle Seahawks vs. the St. Louis Rams.

"Hostages" 10:00 p.m. CBS — Ellen must get rid of an unexpected visitor without looking suspicious.

"The Blacklist" 10:01 p.m. NBC — A menacing corporate terrorist is tracked.

"Castle" 10:01 p.m. ABC — After woman's body is found ritually posed, odd symbols turn up in her apartment.

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Rose Scott signals as Closer Look goes on air in the WABE studio. An Atlanta resident left WABE a $3 million donation, a boost after WABE lost $1.9 million in annual funding from the Corporation of Public Broadcasting. (Ben Gray / AJC file)

Credit: Ben Gray