1 bones the secrets in the proposal fox 'Bones' Season 9 premiere: Photos from 'The Secrets in the Proposal'What’s coming in the “Bones” Season 9 premiere? Photos from “The Secrets in the Proposal” give a few hints about the case at the center of the first episode back.

Naturally, there are a lot of issues between Booth (David Boreanaz) and Brennan (Emily Deschanel), now that Booth has refused Brennan’s offer of marriage. Things are so stressful, in fact, that Booth talks out his troubles to a friend and former priest, Aldo (guest star Mather Zickel).

2  bones the secrets in the proposal fox 'Bones' Season 9 premiere: Photos from 'The Secrets in the Proposal'Stress between the couple is evident when Booth arrives at the murder scene to find Brennan looking angry.

3  bones the secrets in the proposal fox 'Bones' Season 9 premiere: Photos from 'The Secrets in the Proposal'The two don’t seem to trust each other anymore.

4 bones the secrets in the proposal fox 'Bones' Season 9 premiere: Photos from 'The Secrets in the Proposal'While pursuing a lead, Booth ends up having to pursue a CIA agent through a bus parking lot.

6 bones the secrets in the proposal fox 'Bones' Season 9 premiere: Photos from 'The Secrets in the Proposal'The agent is named Donny (guest star Freddie Prinze Jr.).

5 bones the secrets in the proposal fox 'Bones' Season 9 premiere: Photos from 'The Secrets in the Proposal'As it turns out, Donny is an old friend of Booth’s as well.

7 bones the secrets in the proposal fox 'Bones' Season 9 premiere: Photos from 'The Secrets in the Proposal'The mistrust remains when Booth and Brennan investigate the possible crime scene.

8 bones the secrets in the proposal fox 'Bones' Season 9 premiere: Photos from 'The Secrets in the Proposal'At least Brennan finds some blood to make the visit worthwhile!

9 bones the secrets in the proposal fox 'Bones' Season 9 premiere: Photos from 'The Secrets in the Proposal'“Bones” Season 9 will premiere on Monday, Sept. 16 at 8 p.m. on FOX.