David Henrie, who plays the son on CBS’ How I Met Your Mother, has landed the lead in CBS’ comedy pilot Assistants. The project, from writer Tucker Cawley, centers on Mike (Henrie) who, newly arrived in Hollywood from a small town in Pennsylvania, is hoping his job as an assistant to a big celebrity might open doors for him. In the meantime, he’s learning the ropes from his fellow assistants who know how to tip-toe around their neurotic boss and her equally crazy husband.

Thomas Kretschmann (King Kong) has joined ABC’s thriller/horror drama pilot The River. After TV explorer husband Emmet Cole (Bruce Greenwood) goes missing in the Amazon, his son Lincoln (Joe Anderson) and wife Tess (Leslie Hope) go on a rescue expedition. Kretschmann, who recently signed with APA, will play an ex-military badass who is in charge of security for the mission to the Amazon.

Joshua Bowman has landed a role in ABC’s drama pilot Revenge, which centers on Emily Thorn/Amanda Clarke (Emily VanCamp), a mysterious woman who comes to the Hamptons to exact revenge on the Graysons, who destroyed her family. Bowman will play Daniel Grayson, the dashing twentysomething heir who gets engaged to Emily. Bowman, repped by Gersh, Management 360 and the UK’s United Agents, recently wrapped So Undercover.

Shelley Hennig (Days of Our Lives) and Jessica Parker Kennedy (Smallville) have joined the CW one-hour pilot The Secret Circle, about Cassie (Britt Robertson), who moves to a new town and discovers that not only is she a witch and part of a secret coven, but she’s also the key that will unlock a centuries-old battle of good versus evil. Hennig, repped by Gersh and Alchemy, will play the head of the witches circle who quickly befriends Cassie. Kennedy, repped by Gersh and Armada Partners, will play another member of the coven of witches.

Marco Grazzini has booked two pilots this season. He is a regular in ABC’s Poe, a crime procedural following Edgar Allan Poe (Chris Egan), the world’s very first detective, as he uses unconventional methods to investigate dark mysteries in 1840s Boston. Grazzini will play the beau of Poe’s muse Sarah (Tabrett Bethell). Additionally, Grazzini, repped by Ambition Talent & Zero Gravity Management, will guest star in CW’s Awakening.