sōlus intrāuī nex sōlus illinc exiī

Unsure about the meaning of this sentence (from Ørberg’s Colloquia Personarum XXIV). Diodorus is describing the fire at his house. I thought the general sense could be ‘I entered alone, but left since only death was there’ but nex solus illinc exii is really throwing me.

Solus intravi, nec solus illinc exii:

You need to look at the whole sentence.

"“Solus intravi, nec solus illinc exii: servus meus, qui interim advenerat, me vix vivum e domo ardenti tulit. Ecce servus fortis qui erum suum servavit.”

Diodorus entered alone but who also came along and what did he do?

If the text reads nec, not nex, then OP’s question is based on a typo.

My text (Focus imprint) clearly has a typo. nec solus makes perfect sense. Thank you!

Perhaps it is worthwhile telling the publisher that your copy has a misprint?