Congrats! Receiving a few interview invites is a good indication that you're qualified for a fellowship spot.
My experience interviewing for forensic fellowship left me feeling that the process is more transparent than residency or medical school interviews. I cannot speak to the structure of a virtual interview, but the interview day has a familiar structure. You meet with the current fellows casually and sometimes they will also interview you formally. You'll meet with the fellowship program director and other faculty. Two programs that I interviewed at also had me meet with their psychology faculty to discuss research opportunities. The questions fell into the themes of "Why forensics? Why this program? Any preference for criminal vs civil? Are you aware that forensics is more than just working at a jail/prison? What's your experience? What do you want to learn?"
There is also a more subtle line of questioning regarding your experience with receiving and responding to criticism. They also try to figure out how you handle work-related stress. You'll benefit from presenting yourself as authentically as possible.
Unlike residency interviews, the process of receiving and accepting an offer for forensic fellowship varies widely. Some programs will offer you a spot at the conclusion of your interview. Some will call or email you a day or a week later to offer you a spot. Some programs say nothing but will be responsive to you calling and asking for a spot. Some programs will offer you a spot only after another applicant turns their offer down. In general, you should at least interview at your top programs before accepting any offer. Be polite and stay in contact with the programs you're serious about.
Best of luck!
