I applied through an employee referral. The process took 2 months. I interviewed at FTI Consulting (Denver, CO) in Mar 2018
Interview
2 phone interviews, then a super day at the Denver office where I interviewed with 4 directors and went out to lunch. People were very nice during the interview and questions ranged on technical to behavioral. Most questions were behavioral and about my experience. They asked "why consulting" and "why FTI"
For the AC
1) group round - did a case study and each of us were asked questions based on our group answer after
2) math and verbal reasoning test, written essay test
3) individual interviews - one with current analysts about cv, one with a partner (casing)
Pretty basic behavioral questions - no technicals. I'd recommend knowing your "why" and being able to clearly explain your interest in the specific practice. Also, prepare to ask the interviewer more in-depth questions, too.
Online assessment including verbal and numerical parts for the financial and economic consulting intern position. Given one minute for each question, I insist the time was quite tight for verbal part