“Roberta Flack: KILLING ME SOFTLY” (8 P.M., SHOWTIME): This documentary explores the

“Roberta Flack: KILLING ME SOFTLY” (8 P.M., SHOWTIME): This documentary explores the singer’s life against the backdrop of the civil-rights movement.

“50 Ways to Kill Your Mother” (9 p.m., Discovery Life): This is either a new investigative crime show or a look at rejected Paul Simon song titles.

“Allegiance” (10 p.m., NBC): This new drama is about a rookie CIA analyst (Gavin Stenhouse) whose first case requires him to examine the testimony of a Russian intelligence agent. What he doesn’t know is that his parents (Hope Davis, Scott Cohen) are former Russian spies.

TV listings, B6