Blindspot Weller (Sullivan Stapleton) and the team join forces with a U.S. marshal (guest star Trieste Kelly Dunn) to stop a mob leader after a failed attempt to assassinate a politician during a rally. Jaimie Alexander, Rob Brown, Archie Panjabi, Ashley Johnson and Michelle Hurd also star. 8 p.m. NBC
Arrow Curtis, Wild Dog and Evelyn Sharp (Echo Kellum, Rick Gonzalez, Madison McLaughlin) become Oliver’s (Stephen Amell) new team, but some of them may not be up to the task. Emily Bett Rickards also stars. 8 p.m. KTLA
The Goldbergs Murray and Pop-Pop (Jeff Garlin,...