|(Leftbank Pictures for Masterpiece)|
Masterpiece Mystery! 9 p.m., Channel 2
“Zen’’ continues with Rufus Sewell as the Venetian detective. In tonight’s case, about a dead aristocrat: Did he jump or was he pushed?
The Marriage Ref 10 p.m., Channel 7
Lauren Graham, Colin Quinn, and Mary J. Blige deliver their opinions about a husband who has trouble with his wife’s love of accent pillows.
Big Brother 13 8 p.m., Channel 4
Nominations for eviction.
Comic Con ’11 Live Tomorrow at 4 p.m., G4
In San Diego with hosts Kevin Pereira and Candace Bailey.
Drop Dead Diva 9 p.m., Lifetime
Jane represents a lesbian couple.
True Blood 9 p.m., HBO
Lafayette goes to Mexico.
Leverage 9 p.m., TNT
A million-dollar potato.