Called back in after interview?

Hi, I am a 20 year old college student. This past week, I've had two interviews for a part-time position at one of my local Chick-fil-A's. After the first two interviews (the first one was phone call and the second was facetime) I felt confident that I had a chance at the job. This morning I had the third interview, and I didn't feel very confident after the interview was over. On my way home, I got a call from the interviewer (one of the managers) asking if I could come in tomorrow morning to meet once again. Is this a good sign? Any advice would be greatly appreciated.

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