Greater Boston 7 p.m. WGBH (Channel 2)
Rick Steves’ Europe 7:30 p.m. WGBH (Channel 2) A look at Rome’s lesser-known areas, including the Trastevere district and the historic Jewish ghetto.
Frontline 10 p.m. WGBH (Channel 2) A discussion on whether the Boston Marathon bombings could have been prevented.
Mystery Main Streets
7:30 p.m. WCVB-TV (Channel 5) A burger spot with a cult following, Shake Shack, crops up in the Boston area.
Morning Edition With Bob Oakes 5 a.m. and All Things Considered With Sacha
Pfeiffer 4 p.m. WBUR-FM (90.9) Morning Edition With Bob Seay 6 a.m. and All Things Considered With Jordan Weinstein 4 p.m. WGBH-FM (89.7) Why do we call the marathon bombings “surreal”?
Boston Public Radio noon WGBH-FM (89.7) Dr. Michael Zinner, chief surgeon at Brigham and Women’s Hospital, about his experience treating the victims of the Boston Marathon bombings. On “Open Mic,” Charlie Baker, 2010 Republican nominee for Massachusetts governor.
Radio Boston 3 p.m. WBUR-FM (90.9) Stories about what is unique about our city and state.
NightSide With Dan Rea
8 p.m. WBZ-AM (1030) Mass. US Senate primary results.
CBS This Morning at 7 a.m. on Chs. 4 and 12.
Good Morning America at
7 a.m. on Chs. 5, 6, and 9.
Live! With Kelly and Michael at 9 a.m. on Chs. 5 and 9;
10 a.m. on Ch. 10. Robert Downey Jr.
The View at 11 a.m. on Chs. 5, 6, and 9.
The Talk at 2 p.m. on Chs. 4 and 12.
The Ellen DeGeneres Show at 4 p.m. on Chs. 5, 9 and 10. Rapper-actor LL Cool J.
Greater Boston at 6 p.m. on Ch. 44; 7 p.m. on Ch. 2; midnight on Ch. 2.
Real Time With Bill Maher
at 10 p.m. on HBO2. Talk-show host Jimmy Kimmel.
Conan at 11 p.m. and
12:30 a.m. on TBS. Ke$ha;
The Daily Show With Jon Stewart at 11 p.m. and
1:01 a.m. on COM.
Colbert Report at 11:31 p.m. and 1:31 a.m. on COM.
The Tonight Show With Jay Leno at 11:34 p.m. on Chs. 7 and 10.
Jimmy Kimmel Live at
11:35 p.m. on Chs. 5, 6 and 9. Gabourey Sidibe; Band of Horses perform.
Late Show With David Letterman at 11:35 p.m. on Chs. 4 and 12. Phil McGraw; Phoenix performs.
Late Night With Jimmy Fallon at 12:37 a.m. on Chs. 7 and 10.
The Late Late Show With Craig Ferguson at 12:37 a.m. on Chs. 4 and 12. Larry the Cable Guy.