1) “Masterpiece: Grantchester,” 9 p.m., PBS. This season has had mini-glimpses of the new vicar. Its first two mysteries were tackled by the original guy, the third by his assistant. Now, at last, Will Davenport (Tom Brittney, shown here) takes over. Riding a motorcycle and listening to rock, he gives this late-’50s, English village a jolt. He has no plans to help solve crimes … until a boy, silent and blood-stained, arrives. With one exception (the boy’s over-the-top father), the result is skillfully written and played.
2) Shark attack cable. Now we have two shark-stuffed channels instead of one. NatGeo Wild has sharks until noon ET today, then continues “Sharkfest” through Friday; meanwhile, Discovery launches its 32nd annual Shark Week. That starts at 6 a.m., with a flood of reruns. Then there’s a search for the long-ago megalodon at 8 p.m. and a “Shark Trip” at 9 with Anthony Anderson, Joel McHale, Adam DeVine, Damon Wayans Jr. and Rob Riggle … who then hosts “Shark After Dark” at 11:01.
3) “Instinct,” 8 p.m., CBS. This is a tough murder case – partly because of the bizarre ritual involved and partly because the victim (a divorce lawyer) had plenty of enemies. As Lizzie and David investigate, they each face personal problems – she with romance, he with adoption.
4) “Pennyworth” debut, 9 p.m., Epix. Fresh from the war, Alfred Pennyworth wants to start a security business. He’s soon doing action-adventure stuff … which will lead to much more. This is, after all, the Alfred who will later be the protect young Bruce Wayne and become Batman’s butler.
5) “To Tell the Truth,” 10 p.m., ABC. At the same time that he’s chasing sharks on Discovery, Joel McHale is a panelist here. He joins Bob Saget and two people from the “One Day at a Time” revival – actress Rita Moreno, 87, and producer/writer Norman Lear, who turned 97 on Saturday.
— Mike Hughes, TV America