1) I know you already answered this, but in the scene, flashback/dream, in which Dorina is spying on the smugglers’ meeting in the abandoned factory and then meets the Irin, she describes the smugglers saying that the air around them shimmered in fluctuating colors and then goes on describing the colors and associates them with a feeling, e.g. yellow-green of fear. Later on , just before the Irin intrudes, she describes one of the fey’s power like a twist of smoke if smoke glowed from the inside and the Irin himself burned silver bright like a fallen star. So if Dorina can visually recognize vampires’ family lines like some other vampires and one of her master powers is seeing heat signatures, what was she seeing and describing in that scene?

It’s power signatures being shown here, actually, which serve a number of functions. Power from a particular master vampire has a recognizable form, like a fingerprint, that can be observed on his children (and therefore indicate their family line). But a power signature is useful for more than figuring out which vamps belong to which master. It also can say a lot about the vampire’s power level and/or mood, which is what Dorina was commenting on here.

The fey and Irin’s power signatures, however, were different, more alien to her eyes, but they were nonetheless recognizable for what they were. It’s why Dorina avoided the fey’s “smoke,” which, had it brushed her, would have revealed her presence. And why she was so entranced by the Irin–she’d never seen a power signature that strong before.

2) We know that a vampire becomes a master- seventh-level, right?- when he can make others, but how do they go up the other levels, since here and there there are descriptions of vampires a little vague on masters’ levels based only on their power and Kit said Lawrence gained two of his major gifts before he passed to first-level. Are there particular skills/powers they must attain to pass?

I’m not sure I understand this question. Master levels are simply a convenient way to talk about how powerful a particular master has become. They move from level to level (assuming they don’t plateau at some point as most do) when they grow in strength. So, yes, it is a designation based solely on power, not influence, wealth, intellect, or some other measurement.

But if you’re looking for an outward manifestation of a master’s power, there are markers along the way.

Seventh level: a vampire can make other vamps.

Sixth level: Taste often returns, allowing the enjoyment of food again, and other senses generally improve dramatically.

Fifth level: A master is often emancipated, or offered the chance at it by his master, because he is becoming difficult to control by force. Some branch out and start new families at this level.

Fourth level: A master can withstand very limited daylight without combustion. Also, those masters who choose to stay with their old master are often given considerable leeway/put in command of an auxiliary court. Marlowe’s upper-level masters, for instance, staff his various courts around the globe, and process the information that comes in for him. This gets powerful vampires out from underfoot, and gives them something useful to do, as well as providing a sense of automony.

Third level: A master can withstand more daylight without combustion, although with a significant power drain.

Second level: A master can withstand considerable daylight, with less of a power drain. Also, first level powers are sometimes glimpsed here. Also, much more of a chance that the vampires you turn will someday reach master level themselves.

First level: A catch-all term for masters above the other rankings, basically meaning very, very strong. Daylight is still a power drain, but they have power to burn so it really is not an issue any more. Special first-level abilities show up over time, sometimes more than one, which are carefully guarded secrets and “special weapons” used in cases of emergency. At the upper power levels of the first rank, senate seats become an option for those willing to risk the struggle for one.

3) This one may be spoilerish….

In Fury’s Kiss, someone, Mircea or Marlowe, says that Ming-de is the Consul biggest competition to be the leader of the senates’ alliance. I presume that Alejandro doesn’t count as he is crazy and his court is a mess and the European Senate is weak, so Anthony is also out, but what of Hassani and Parindra?

If you’re a consul, it’s safe to say that you’re dangerous. I don’t think Mircea or Marlowe is likely to discount the threat from any of them, minus Alejandro, of course. But Mircea knows Ming-de extremely well from the time he spent at her court. He knows she is exceptionally powerful and extremely ambitious, with a highly effective group of servants. She’s also whip-smart, and has a rare master power that she has honed to a knife-edge. He knows exactly how dangerous she can be.

4) What does Louis-Cesare use as crest? The coat of arms of house de Bourbon, like the surname, the one of the Basarab or another one?

Neither. He made up his own, quartering the Basarab crest with the one Anthony (essentially his vampire foster father) had adopted in the Middle Ages. And only because Anthony practically insisted he have one at all. Louis-Cesare is arrogant, God knows, but about what he can do, not about what family he comes from (which, let’s face it, never worked out to be much of an advantage for him, did it?) He probably wouldn’t have bothered to have one at all, on his own. But Anthony is more savvy about playing politics than his champion, and knew that you win every one of the battles you never have to fight. So a visual reminder for any potential challengers of Louis-Cesare’s connection to two powerful vampire lines wasn’t going to hurt him.

5) How and when do weres get their names? Do they earn them or they receive them when they reach a certain age? Since she is part of Arnou now, does Lia have a were name or not since she doesn’t- can’t- change?

They usually take their first one from a seminal event in their early lives, or from a family connection/talent. But Were names are not permanent like human ones usually are, but often change at different stages of life to reflect new positions/events. Lia doesn’t have one, because she chose to live as a human.